The Tampa Tornadoes are a professional developmental football team based in Tampa, Florida .
149-601: The team was founded in 2017 as the indoor football team the Tampa Bay Tornadoes and later joined American Arena League (AAL) for the 2020 season, but did not play due to the onset of the COVID-19 pandemic . The team was announced to have joined the National Arena League for the 2021 season; however, the team was terminated from the league after failing to provide letters of credit. Following
298-422: A gridiron in appearance. Other major rule changes included a reduction of the field size to 110 by 53 + 1 ⁄ 3 yards (100.6 m × 48.8 m) and the adoption of a scoring system that awarded four points for a touchdown, two for a safety and a goal following a touchdown , and five for a goal from the field . Additionally, tackling below the waist was legalized, and a static line of scrimmage
447-403: A halftime period, and the first and third quarters are followed by a short break. Before the game starts, the referee and each team's captain meet at midfield for a coin toss . The visiting team can call either "heads" or "tails"; the winner of the toss chooses whether to receive or kick off the ball or which goal they wish to defend. They can defer their choice until the second half. Unless
596-418: A touchdown , but stops after an extra point or two-point conversion attempt. If a quarter ends as a touchdown is scored, an untimed conversion attempt takes place. The play clock is 30 seconds, starting at the end of the previous play. In all arenas, the final minute of the period is measured in tenths of a second. Prior to the 2018 season, during the final minute of the fourth quarter, the clock stopped if
745-515: A "dead" player may participate on kickoffs, or as long snapper or holder. In 2006, the AFL changed its substitution rules such that free substitutions were allowed on all kickoffs. The most significant change was the introduction of free substitution , the so-called " Elway Rule". Previously, AFL coaches were limited to one substitution per position per quarter. From 2007 to 2019 and come 2024 , coaches can substitute players at will. The rationale
894-401: A 10-yard-long chain between them, are used to measure for a first down. The chain crew stays on the sidelines during the game, but if requested by the officials they will briefly bring the chains on to the field to measure. A typical chain crew will have at least three people—two members of the chain crew will hold either of the two sticks, while a third will hold the down marker. The down marker,
1043-435: A 15-minute halftime ( ArenaBowl has a 30-minute interval). Teams are allowed three timeouts per half, and two per overtime period if regulation ends tied. Teams must use a timeout if there's an injury inside a half-minute left in regulation or overtime; exception applies to when team has no timeouts, and this occurs, they're granted an extra timeout. The clock stops for out-of-bounds plays, incomplete passes, or sacks only in
1192-525: A PAT attempt or successful field goal, the scoring team must kick the ball off to the other team. A safety is scored when the ball carrier is tackled in the carrier's own end zone. Safeties are worth two points, which are awarded to the defense. In addition, the team that conceded the safety must kick the ball to the scoring team via a free kick . Football games are played on a rectangular field that measures 120 yards (110 m) long and 53 + 1 ⁄ 3 yards (48.8 m) wide. Lines marked along
1341-660: A certain level of stability, however. The National Indoor Football League (NIFL) began in 2001 and was the most successful league in the early 2000s. The Indoor Football League (IFL) began in the autumn of 2008 when two already-established leagues (the Intense Football League and United Indoor Football ) chose to merge into a single organization. The IFL's expansion model has been based less on establishing new teams and more on acquiring existing teams from other leagues. The IFL has 16 teams as of 2024. Other, regional leagues include Champions Indoor Football (CIF),
1490-528: A common draft that would take place each year, and it instituted an annual World Championship game to be played between the champions of each league. This championship game began play at the end of the 1966 season. Once the merger was completed, it was no longer a championship game between two leagues and reverted to the NFL championship game, which came to be known as the Super Bowl . College football maintained
1639-598: A feat the Professional Football Researchers Association compared to "selling refrigerators to Eskimos ". Princeton, Harvard, Yale, and Columbia then agreed to intercollegiate play using a form of rugby union rules with a modified scoring system. These schools formed the Intercollegiate Football Association , although Yale did not join until 1879. Yale player Walter Camp , now regarded as
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#17327902231421788-508: A few team names and logos owned by outside parties, in a December 2009 bankruptcy auction. Shortly after the purchase, AF1 adopted the Arena Football League name, and the AFL relaunched in 2010 . The "iron man" rule, requiring at least six of the eight players to play on both offense and defense, was dropped, but most other past AFL rules remained unchanged. The relaunched league saw franchises return and renewed interest, but by
1937-453: A field goal instead. A group of officials, the chain crew, keeps track of both the downs and the distance measurements. On television, a yellow line is electronically superimposed on the field to show the first down line to the viewing audience. There are two categories of kicks in football: scrimmage kicks, which can be executed by the offensive team on any down from behind or on the line of scrimmage, and free kicks. The free kicks are
2086-507: A field that was identical in size to a standard North American ice hockey rink, 200 by 85 feet (61 m × 26 m). This resulted in the field being 50 yards long (half of the length of a standard American football field) with eight-yard end zones (which may, if necessary, be curved in the end zones as hockey rinks are), and the field being slightly over half as wide as a standard football field. Foster adopted short-pile artificial turfs (which were then standard) such as AstroTurf for
2235-428: A game between Yale and Princeton, both teams used this strategy to maintain their undefeated records. Each team held the ball, gaining no ground, for an entire half, resulting in a 0–0 tie. This "block game" proved extremely unpopular with both teams' spectators and fans. A rule change was necessary to prevent this strategy from taking hold, and a reversion to the scrum was considered. However, Camp successfully proposed
2384-598: A game for the Allegheny Athletic Association against the Pittsburgh Athletic Club . This is the first recorded instance of a player being paid to participate in a game of American football , although many athletic clubs in the 1880s offered indirect benefits, such as helping players attain employment, giving out trophies or watches that players could pawn for money, or paying double in expense money. Despite these extra benefits,
2533-417: A hockey rink; this is much like some Canadian football fields where the end zones can be cut off by a track). Each sideline has a heavily padded barrier, with the padding placed over the hockey dasher boards. The goalpost uprights are 9 feet (2.7 m) wide, and the crossbar is 15 feet (4.6 m) above the playing surface. Taut rebound nets on either side of the posts bounce any missed field goals back into
2682-634: A howling success. The men had no trouble in catching punts, and football was played on its merits, without the handicaps of a wet field or a strong wind. Toward the end of the second half it got very dark, and the spectators were treated to a novelty in the shape of football by electric light." Although both critically and commercially successful, the Coliseum was destroyed in a fire less than two years after its opening, and its replacement could not accommodate an American football field. Later, at Madison Square Garden in 1902 and 1903, there were games known as
2831-533: A large stick with a dial on it, is flipped after each play to indicate the current down and is typically moved to the approximate spot of the ball. The chain crew system has been used for over 100 years and is considered an accurate measure of distance, rarely subject to criticism from either side. Football is a full-contact sport, and injuries are relatively common. Most injuries occur during training sessions, particularly ones that involve contact between players. To try to prevent injuries, players are required to wear
2980-564: A league-suggested numbering scheme. Although the sport is played almost exclusively by men, women are eligible to play in high school, college, and professional football. No woman has ever played in the NFL, but women have played in high school and college football games. In 2018, 1,100 of the 225,000 players in Pop Warner Little Scholars youth football were girls, and around 11% of the 5.5 million Americans who report playing tackle football are female according to
3129-408: A long circumference of 28 to 28 + 1 ⁄ 2 inches (71 to 72 cm), and a short circumference of 21 to 21 + 1 ⁄ 4 inches (53 to 54 cm). In college and high school play the ball has a long axis of 10 + 7 ⁄ 8 to 11 + 7 ⁄ 16 inches (27.6 to 29.1 cm), a long circumference of 27 + 3 ⁄ 4 to 28 + 1 ⁄ 2 inches (70 to 72 cm), and
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#17327902231423278-466: A major network television broadcasting contract with NBC , and eventually launched an official minor league , af2 , beginning in 2000. This effort basically served two purposes: one as a developmental league for the AFL, and as a place where former collegiate players could develop while at the same time learning and becoming accustomed to the unique arena rules, and secondly as a pre-emptive way of shutting out potential new indoor football competitors (this
3427-420: A minimum of 10 feet (3.0 m) on high school fields. Goal posts are padded at the base, and orange ribbons are normally placed at the tip of each upright as indicators of wind strength and direction. The football itself is a prolate spheroid leather ball, similar to the balls used in rugby or Australian rules football . To contain the compressed air within it, a pig's bladder was commonly used before
3576-704: A national champion of college football. The first was the Bowl Coalition , in place from 1992 to 1994. This was replaced in 1995 by the Bowl Alliance , which gave way to the Bowl Championship Series (BCS) in 1997. The BCS arrangement proved to be controversial , and was replaced in 2014 by the College Football Playoff (CFP). A football game is played between two teams of 11 players each. Playing with more on
3725-472: A new ownership group that had acquired the league's trademarks and social media accounts announced another revival of the league, which began play in 2024. On May 12, 2024, kicker Melissa Strother made an extra point while playing for the Washington Wolfpack , making her the first female player to score a point in the league. Other indoor football leagues have been formed, without the use of
3874-420: A newspaper account, the field grew dark in the second half, and play was halted for ten minutes to discuss whether play should continue. Play was resumed, and the lights were finally turned on after Michigan scored a touchdown. The press proclaimed the experiment in indoor football to be a success: One thing at least was settled by the game, and that is, that indoor football is literally and figuratively speaking
4023-536: A non-traditional (spring-summer) season, was in operation in 1983–1985. When the USFL ceased operations, Foster saw his opportunity. He staged a "test" game in Rockford, Illinois in 1986 and put together a four-team league for a "demonstration season" in the spring of 1987, with games televised on ESPN . Foster had to adopt a field that would fit within the smaller playing surfaces found in most arenas and thus created
4172-428: A pass hits the ground without a player having caught it. A forward pass can be legally attempted only if the passer is behind the line of scrimmage; only one forward pass can be attempted per down. As in rugby, players can also pass the ball backwards at any point during a play. In the NFL, a down also ends immediately if the runner's helmet comes off. The offense is given a series of four plays, known as downs . If
4321-402: A punt striking the ceiling. The end zones were slightly shorter—eight yards instead of the standard ten (coincidentally, the eight-yard endzone length is the standard in modern indoor football). While several attempts to create a true indoor football game have been made since shortly after American football was developed, the first version to meet with relatively widespread success and acceptance
4470-427: A quarter ends, play continues until the down is completed. If certain fouls are committed during play while time has expired, the quarter may be extended through an untimed down . Games last longer than their defined length due to play stoppages—the average NFL game lasts slightly over three hours. Time in a football game is measured by the game clock. An operator is responsible for starting, stopping and operating
4619-414: A round ball that could not be picked up or carried. It could, however, be kicked or batted with the feet, hands, head, or sides, with the objective being to advance it into the opponent's goal. Rutgers won the game 6–4. Collegiate play continued for several years with games played using the rules of the host school. Representatives of Yale, Columbia , Princeton and Rutgers met on October 19, 1873, to create
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4768-422: A rule in 1882 that limited each team to three downs , or tackles, to advance the ball 5 yards (4.6 m). Failure to advance the ball the required distance within those three downs would result in control of the ball being forfeited to the other team. This change effectively made American football a separate sport from rugby, and the resulting five-yard lines added to the field to measure distances made it resemble
4917-436: A secondary signal. Women can serve as officials; Sarah Thomas became the NFL's first female official in 2015. The seven officials (of a standard seven-man crew; lower levels of play up to the college level use fewer officials) on the field are each tasked with a different set of responsibilities: Another set of officials, the chain crew , are responsible for moving the chains. The chains, consisting of two large sticks with
5066-410: A short circumference of 20 + 3 ⁄ 4 to 21 + 1 ⁄ 4 inches (53 to 54 cm). Football games last for a total of 60 minutes in professional and college play and are divided into two halves of 30 minutes and four quarters of 15 minutes. High school football games are 48 minutes in length with two halves of 24 minutes and four quarters of 12 minutes. The two halves are separated by
5215-456: A standard set of rules for use by all schools. Teams were set at 20 players each, and fields of 400 by 250 feet (122 m × 76 m) were specified. Harvard abstained from the conference, as they favored a rugby-style game that allowed running with the ball. After playing McGill University using both American (known as "the Boston game ") for the first game and Canadian (rugby) rules for
5364-585: A three- or four-point stance at the start of the snap. Two defenders serve as linebackers , called the Mac and the Jack. The Mac may blitz from the side of the line opposite the offensive Tight End. The Jack's role has changed after new rules set in place by the league in 2008. The Jack cannot blitz, but under new, more defense-friendly rules, the Jack Linebacker may roam sideline to sideline within five yards of
5513-477: A time from a 21-man active roster. Before 2007, players played both offense and defense except for the Quarterback , Kicker , and Offensive Specialist (Wide Receiver/Running Back combination) and two Defensive Specialists (Defensive Backs). If a player enters and leaves, from the moment he leaves the player is considered "dead" and cannot return to play until the designated time is served. Exception:
5662-449: A tradition of postseason bowl games . Each bowl game was associated with a particular conference and earning a spot in a bowl game was the reward for winning a conference. This arrangement was profitable, but it tended to prevent the two top-ranked teams from meeting in a true national championship game, as they would normally be committed to the bowl games of their respective conferences. Several systems have been used since 1992 to determine
5811-556: A year during the 1930s; the stadium stopped hosting games in 1940 and did not resume hosting football games until 1961. In the 1960s, the Boardwalk Bowl , a post-season game involving small college teams, was contested at the convention center. The Bowl was an attempt to make Atlantic City more of a year-round resort in the pre-gambling era as opposed to a single-season one (the Miss America Pageant , also held at
5960-425: Is 17,000 square feet (1,600 m )). The scrimmage area is 50 yards (46 m) long (unlike the field in NFL which is 100 yards (91 m) long), and each end zone is approximately 8 yards deep, two yards less than the standard 10 yards. Depending on the venue in which a game is being played, the end zones may be rectangular (like a basketball court) or, where necessary because of the building design, rounded (like
6109-466: Is ahead after one possession wins. If the teams are tied after each has had a possession, true sudden death rules apply thereafter. Each overtime period is 15 minutes, and continues from the ending of the previous overtime period until the tie is broken. All overtimes thereafter are true sudden death; no games can be tied. This includes both games of all semifinal series. American football American football , referred to simply as football in
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6258-425: Is called on the offense. There are two main ways the offense can advance the ball: running and passing . In a typical play, the center passes the ball backwards and between their legs to the quarterback in a process known as the snap . The quarterback then either hands the ball off to a running back, throws the ball, or runs with it. The play ends when the player with the ball is tackled or goes out-of-bounds or
6407-437: Is caught or recovered behind the line of scrimmage. If it is touched or recovered by the kicking team beyond this line, it becomes dead at the spot where it was touched. The kicking team is prohibited from interfering with the receiver's opportunity to catch the ball. The receiving team has the option of signaling for a fair catch , which prohibits the defense from blocking into or tackling the receiver. The play ends as soon as
6556-403: Is kicked off from the goal line, to start the halves and odd overtimes, or after any score. The team with the ball is given four downs to gain ten yards or score. Punting is illegal because of the size of the playing field, however, a field goal that either misses wide (therefore bouncing off the nets surrounding the goalposts) or falls short, may be returned. Thus an impossibly long field goal
6705-403: Is known as a two-point conversion . In general, the extra point is almost always successful, while the two-point conversion is a much riskier play with a higher probability of failure; accordingly, extra point attempts are far more common than two-point conversion attempts. A field goal (FG), worth three points, is scored when the ball is place kicked or drop kicked through the uprights and over
6854-449: Is most recently known as American Indoor Football (AIF) went through three names and two ownership changes in its first three seasons. Several other indoor leagues have been announced without ever actually commencing play, or operating only briefly with a handful of teams. Some were claimed attempts to form a second "major" league of indoor football while others were strictly efforts to form a new "minor" league. A few leagues have achieved
7003-434: Is played exclusively indoors, in arenas usually designed for either basketball or ice hockey teams. The field is the same width 85 feet (26 m) and length 200 feet (61 m) as a standard NHL hockey rink, making it approximately 30% of the dimensions of a regular American gridiron football field , and 19% of a Canadian gridiron football field (the total playing area, including the end zones of an Arena football field
7152-407: Is responsible for all kicking plays. The special teams unit of the team in control of the ball tries to execute field goal (FG) attempts, punts , and kickoffs , while the opposing team's unit will aim to block or return them. Three positions are specific to the field goal and PAT (point-after-touchdown) unit: the placekicker (K or PK), holder (H), and long snapper (LS). The long snapper's job
7301-413: Is tantamount to a punt in other football variants. A receiver jumping to catch a pass needs to get only one foot down in bounds for the catch to be ruled a completed catch, just as in college football . Practically, this means that one foot must touch the ground before the receiver is pushed into the boards by an opposing player. Passes that bounce off the rebound nets remain "live." Balls that bounce off
7450-421: Is to block members of the defensive line from tackling the ball carrier on running plays or sacking the quarterback on passing plays. The leader of the offensive line is the center, who is responsible for snapping the ball to the quarterback, blocking, and for making sure that the other linemen do their jobs during the play. On either side of the center are the guards (G), while tackles (T) line up outside
7599-437: Is to snap the football to the holder, who will catch and position it for the placekicker. There is not usually a holder on kickoffs, because the ball is kicked off a tee; however, a holder may be used in certain situations, such as if wind is preventing the ball from remaining upright on the tee. The player on the receiving team who catches the ball is known as the kickoff returner (KR). The positions specific to punt plays are
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#17327902231427748-607: The 1958 NFL Championship game between the Baltimore Colts and the New York Giants , still referred to as the "Greatest Game Ever Played". The game, a 23–17 overtime victory by the Colts, was seen by millions of television viewers and had a major influence on the popularity of the sport. This, along with the innovations introduced by the new American Football League (AFL) in the early 1960s, helped football to become
7897-877: The American Arena League (AAL) and National Arena League (NAL). Both CIF and the AAL were formed by mergers of existing leagues. The CIF was formed from a merger of the Champions Professional Indoor Football League and the Lone Star Football League in 2015. The AAL was formed in late 2017 as the combination of three leagues that each played one season: the Can-Am Indoor Football League , Arena Pro Football , and Supreme Indoor Football . Champions Indoor Football merged with
8046-572: The Arena Football League , which played 32 seasons in two separate runs from 1987 to 2008 and 2010 to 2019; arenafootball2 , the AFL's erstwhile developmental league , which played 10 seasons from 2000 through 2009; and the China Arena Football League , which played two abbreviated seasons in 2016 and 2019 but was not directly affiliated with the now-defunct AFL. A 2024 reboot of the Arena Football League uses
8195-545: The Chicago Coliseum in the late 1890s. The first such game matched Michigan against Chicago on Thanksgiving Day 1896. The match was "the first collegiate game of football played under a roof." Adding to the novelty, as daylight turned to darkness, the field inside the Coliseum was lit with electric lighting. With seven acres of floor space, the sprawling Coliseum is believed to have not needed any compromises to accommodate an American football field. According to
8344-572: The Indoor Football League and American Indoor Football opt to not use them. The first demonstration of football on a small field was actually played outdoors at the original open-air Madison Square Garden . Using nine-man sides , Pennsylvania defeated Rutgers 10–0 at the annual meeting of the Amateur Athletic Union on January 16, 1889. The first documented indoor football game was an exhibition between
8493-506: The National Arena League (NAL) for the 2021 season, where they were to play against former Tampa Bay Storm rivals, Jacksonville Sharks and a relaunched Orlando Predators . The team was terminated from the NAL after not providing letters of credit, although the Tornadoes had notified the league about their intentions to withdraw and rejoin the AAL. Shortly after, the team rejoined the AAL for
8642-591: The Springfield YMCA Training School and a Yale Senior Class team played on December 12, 1890, at Madison Square Garden II . James Naismith scored a touchdown for Springfield, though Yale won the exhibition 16–10. The following day a second exhibition game was played, with Pennsylvania defeating Rutgers 20–12. The field at Madison Square Garden measured 260 feet (79 m) long and 100 feet (30 m) wide. The first documented indoor regulation football games were those played at
8791-560: The Tampa Bay Tornadoes . Note: Statistics are correct through week six of the 2021 AAL season. Tampa Bay Tornadoes The 2021 Tampa Bay Tornadoes season was the team's inaugural season. Prior to the season, the Tornadoes were originally scheduled to play at the St. Louis Bandits (March 27), Georgia Cobras (April 3), at the Spokane Shock (May 8), and Northern Arizona Wranglers (August 8); however, these games were not played during
8940-411: The kickoff , which starts the first and third quarters and overtime and follows a try attempt or a successful field goal; the safety kick follows a safety. On a kickoff, the ball is placed at the 35-yard line of the kicking team in professional and college play and at the 40-yard line in high school play. The ball may be drop kicked or place kicked. If a place kick is chosen, the ball can be placed on
9089-407: The punter (P), long snapper, upback , and gunner . The long snapper snaps the football directly to the punter, who then drops and kicks it before it hits the ground. Gunners line up split outside the line and race down the field, aiming to tackle the punt returner (PR)—the player who catches the punt. Upbacks line up a short distance behind the line of scrimmage, providing additional protection to
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#17327902231429238-585: The " World Series of Pro Football ." The games were played on a 70-yard by 35-yard dirt field but otherwise adhered to outdoor rules. Poor attendance led to the tournament being discontinued after two years. The Chicago Bears of the National Football League hosted an experimental game against their crosstown rivals, the Cardinals , after the 1930 NFL season , at the indoor Chicago Stadium . Two years later, poor weather conditions led to
9387-471: The "Father of American Football", secured rule changes in 1880 that reduced the size of each team from 15 to 11 players and instituted the snap to replace the chaotic and inconsistent scrum . While the game between Rutgers and Princeton is commonly considered the first American football game, several years prior in 1862, the Oneida Football Club formed as the oldest known football club in
9536-520: The "Father of American Football", established the snap , the line of scrimmage , eleven-player teams, and the concept of downs. Later rule changes legalized the forward pass , created the neutral zone , and specified the size and shape of the football. The sport is closely related to Canadian football , which evolved in parallel with and at the same time as the American game, although its rules were developed independently from those of Camp. Most of
9685-554: The "deuce": if a kickoff goes through the uprights, the kicking team receives two points. This rule had previously been in effect in the IFL and the NAL . The league also instituted the rouge / single , as used in the CFL , whereby, on a kickoff, the kicking team receives one point if the receiving team fails to bring the ball out of its own end zone. After scoring a touchdown, the scoring team has
9834-429: The 10-yard line after any touchdown, if they want to. Any kickoff that goes through the uprights is scored as a "deuce", or two points. Four offensive players must be on the line of scrimmage at the snap ; one of the linemen must declare himself the tight end . One offensive player may be moving forward at the time of the snap as long as he has not yet crossed the line of scrimmage. Three defensive players must be in
9983-875: The 2021 season, but were instead playing home games in Lakeland, Florida , at the RP Funding Center . The team did not finish the 2021 season and have since joined the American Indoor Football Alliance (AIFA), along with other former AAL teams. The team appears to have been rebranded as the Tampa Bay Cyclones prior to the 2022 season. On October 20, 2022, the Cyclones and the AIFA announced their intentions to relocate to Tallahassee, Florida. The team subsequently rebranded as
10132-700: The 2022 season as the Capital City Cyclones , but played as a traveling team from that point until 2024 when they became an 11-man developmental team and rebranded as the Tampa Tornadoes . Following the dissolvement of the Tampa Bay Storm in 2017, after playing for thirty years and being the only remaining charter member from the Arena Football League 's inaugural season , the Tampa Bay Tornado advertised themselves as
10281-493: The AFL New York Jets signed rookie Joe Namath to a then-record $ 437,000 contract (equivalent to $ 4.23 million in 2023). A five-year, $ 40 million NBC television contract followed, which helped to sustain the young league. The bidding war for players ended in 1966 when NFL owners approached the AFL regarding a merger, and the two leagues agreed on one that took full effect in 1970. This agreement provided for
10430-636: The Bears hosting the 1932 NFL Playoff Game against the Portsmouth Spartans (now the Detroit Lions ) at the stadium. A dirt and tanbark field measuring 80 yards long (60 yards plus two ten-yard end zones ) and 45 yards wide was constructed on the arena's floor. The Chicago Stadium games were notable for introducing several rule changes, including the introduction of hash marks to keep play away from spectators who were seated next to
10579-673: The Capital City Cyclones, but played no home games in the 2023 season. On August 26, 2023, Jeffery Singletary, speaking on behalf of Cyclones owner Alton Walker, announced that the Cyclones would be joining the Arena Football League . The AFL had announced a team from Tallahassee in July. The Cyclones wouldn't join the AFL, but instead was announced as one of the inaugural teams in the International Football Alliance (an outdoor developmental league) as
10728-582: The FCS and 85 scholarship players in the FBS, respectively. Individual players in a football game must be designated with a uniform number between 1 and 99, though some teams may "retire" certain numbers , making them unavailable to players. NFL teams are required to number their players by a league-approved numbering system, and any exceptions must be approved by the commissioner . NCAA and NFHS teams are "strongly advised" to number their offensive players according to
10877-456: The Sports and Fitness Industry Association. The role of the offensive unit is to advance the football down the field with the ultimate goal of scoring a touchdown . The offensive team must line up in a legal formation before they can snap the ball. An offensive formation is considered illegal if there are more than four players in the backfield or fewer than five players numbered 50–79 on
11026-586: The United Kingdom, Ireland, New Zealand, and Australia. American football evolved from the sports of rugby and soccer . Rugby, like American football, is a sport in which two competing teams vie for control of a ball, which can be kicked through a set of goalposts or run into the opponent's goal area to score points. What is considered to be the first American football game was played on November 6, 1869 , between Rutgers and Princeton , two college teams. They consisted of 25 players per team and used
11175-468: The United States and Canada and also known as gridiron football , is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense , the team with possession of the oval-shaped football , attempts to advance down the field by running with the ball or throwing it , while the defense , the team without possession of the ball, aims to stop
11324-455: The United States. The team consisted of graduates of Boston's elite preparatory schools and played from 1862 to 1865. The introduction of the snap resulted in an unexpected consequence. Before the snap, the strategy had been to punt if a scrum resulted in bad field position. However, a group of Princeton players realized that, as the snap was uncontested, they could now hold the ball indefinitely to prevent their opponent from scoring. In 1881, in
11473-554: The United States: official time was kept on a scoreboard clock rather than on a watch in the referee's pocket, as the NFL did; optional two-point conversions by pass or run after touchdowns; names on the jerseys of players; and several others, including expansion of the role of minority players, actively recruited by the league in contrast to the NFL. The AFL also signed several star college players who had also been drafted by NFL teams. Competition for players heated up in 1965, when
11622-603: The X cup (formerly Legends Cup and Lingerie Bowl), the LFL played a variant of indoor rules with most of its games in indoor stadiums, although a few teams experimented with playing in outdoor stadiums. The league's brief foray into Australia was played in outdoor stadiums; these teams nevertheless played under indoor football rules. All other women's leagues play on outdoor fields with outdoor rules; there have been several other attempts to form indoor women's football leagues, but none have made it to play. As its name implies, arena football
11771-460: The advent of artificial rubber inside the leather outer shell to sustain crushing forces . At all levels of play, the football is inflated to 12 + 1 ⁄ 2 to 13 + 1 ⁄ 2 psi (86 to 93 kPa), or just under one atmosphere, and weighs 14 to 15 ounces (400 to 430 g); beyond that, the exact dimensions vary slightly. In professional play the ball has a long axis of 11 to 11 + 1 ⁄ 4 inches (28 to 29 cm),
11920-435: The ball is caught, and the ball may not be advanced. Officials are responsible for enforcing game rules and monitoring the clock. All officials carry a whistle and wear black-and-white striped shirts and black hats except for the referee, whose hat is white. Each carries a weighted yellow flag that is thrown to the ground to signal that a foul has been called. An official who spots multiple fouls will throw their hat as
12069-478: The ball off, throws it, or runs with it. The primary role of the halfback, also known as the running back or tailback, is to carry the ball on running plays. Halfbacks may also serve as receivers. Fullbacks tend to be larger than halfbacks and function primarily as blockers, but they are sometimes used as runners in short-yardage or goal-line situations. They are seldom used as receivers. The offensive line (OL) consists of several players whose primary function
12218-467: The ball through the opponent's goalposts for a field goal . The team with the most points at the end of the game wins. American football evolved in the United States, originating from the sports of soccer and rugby . The first American football game was played on November 6, 1869 , between two college teams, Rutgers and Princeton , using rules based on the rules of soccer at the time. A set of rule changes drawn up from 1880 onward by Walter Camp ,
12367-438: The center, likewise began as an attempt to extend the season beyond Labor Day). The Atlantic Coast Football League played its inaugural championship game at the convention center in 1962, but the game only drew 2,000 fans and the game would thereafter move to the home stadium of the team with the best regular season record. The Philadelphia -based Liberty Bowl game, which had been played at Municipal Stadium from 1959 to 1963,
12516-475: The course of the season. The Tornadoes withdrew from the rest of the season near the end of May. Arena football Arena football is a variety of gridiron football designed to be played indoors. The game is played on a smaller field than American or Canadian football, designed to fit in the same surface area as a standard North American ice hockey rink , and features between six and eight players for each team playing at any given time depending on
12665-413: The crossbars of the defense's goalposts. In practice, almost all field goal attempts are done via place kick. While drop kicks were common in the early days of the sport, the shape of modern footballs makes it difficult to reliably drop kick the ball. The last successful scoring play by drop kick in the NFL was accomplished in 2006; prior to that, the last successful drop kick had been made in 1941. After
12814-399: The defense is to prevent the offense from scoring by tackling the ball carrier or by forcing turnovers . Turnovers include interceptions (a defender catching a forward pass intended for the offense) and forced fumbles (taking possession of the ball from the ball-carrier). The defensive line (DL) consists of defensive ends (DE) and defensive tackles (DT). Defensive ends line up on
12963-430: The defensive backfield. They are divided into two types: middle linebackers (MLB) and outside linebackers (OLB). Linebackers tend to serve as the defensive leaders and call the defensive plays, given their vantage point of the offensive backfield. Their roles include defending the run, pressuring the quarterback, and tackling backs, wide receivers, and tight ends in the passing game. The defensive backfield , often called
13112-466: The defensive team for two points. Coaches are given two challenges per game, as in the NFL; to challenge, they must throw their red flag before the next play. If the play stands as called after review, the challenging team loses a timeout. If a team wins both challenges used, a third is granted. Video review is automatic in the final half-minute of regulation, all overtime periods, and all scoring plays and turnovers. A game has four 15-minute quarters with
13261-563: The dismissal from the National Arena League, the team rejoined the AAL and began play in 2021 as a member of the East division, but did not finish the season. They then left the AAL for a newly formed league called the American Indoor Football Alliance for the 2022 season. The team succeeded the region's previous arena football team, the Tampa Bay Storm , that ceased operations in 2017. The team "relocated" to Tallahassee after
13410-559: The end of the 2017 season, almost all of the league's teams had either folded or moved to other leagues, with only the Philadelphia Soul having existed prior to 2016. Five expansion teams, all in the Mid-Atlantic United States , were established over the next two years, before the league announced after the 2019 season that it was dissolving in a second Chapter 7 bankruptcy. However, on February 1, 2023,
13559-472: The ends and sides of the field are known as the end lines and sidelines . Goal lines are marked 10 yards (9.1 m) inward from each end line. Weighted pylons are placed the sidelines on the inside corner of the intersections with the goal lines and end lines. White markings on the field identify the distance from the end zone. Inbound lines, or hash marks , are short parallel lines that mark off 1-yard (0.91 m) increments. Yard lines , which can run
13708-404: The ends of the line, while defensive tackles line up inside, between the defensive ends. The primary responsibilities of defensive ends and defensive tackles are to stop running plays on the outside and inside, respectively, to pressure the quarterback on passing plays, and to occupy the line so that the linebackers can break through. Linebackers line up behind the defensive line but in front of
13857-561: The features that distinguish American football from rugby and soccer are also present in Canadian football. The two sports are considered the primary variants of gridiron football . American football is the most popular sport in the United States in terms of broadcast viewership audience. The most popular forms of the game are professional and college football , with the other major levels being high-school and youth football. As of 2022 , nearly 1.04 million high-school athletes play
14006-685: The fewest schedule conflicts (only competing with touring stadium rock concerts). The spring schedule has since been adopted by virtually all other professional indoor leagues as of 2010. Within a year of the AFL kicking off, its first challenger, the World Indoor Football League formed. The WIFL planned to play a schedule with six teams beginning in summer of 1988 with its own set of indoor-inspired rules, including an unusual system that would have eight men on offense and seven men on defense. Despite having backing from former NFL players, veteran coaches, and singer John Mellencamp ,
14155-514: The field (much like modern indoor football), while goal posts were moved to the goal line. To compensate for the smaller field, teams were "penalized" 20 yards upon crossing midfield. (The Bears' official Web site goes further and claims that field goals were outlawed for the 1932 game.) In 1930, the Atlantic City Convention Center constructed a nearly full-size indoor football field, and used it for one to three games
14304-399: The field because of its ability to be easily rolled up when the arena is being used for other sports. Foster adopted a modified version of eight-man football . He also mandated a one-platoon system that required at least six players to play on both offensive and defensive downs. This had the added desirable effect of limiting team payrolls. There were numerous other rules designed to help
14453-468: The field is punishable by a penalty. Teams may substitute any number of their players between downs; this "platoon" system replaced the original system, which featured limited substitution rules, and has resulted in teams utilizing specialized offensive, defensive and special teams units. The number of players allowed on an active roster varies by league; the NFL has a 53-man roster, while NCAA Division I allows teams to have 63 scholarship players in
14602-402: The field of play. The ball is "live" when rebounding off these nets or their support apparatus. The entire goalframe and goalside rebound net system is suspended on cables from the rafters. The bottom of the two goalside rebound nets are 8 feet (2.4 m) off the playing surface. Each netframe is 32 feet (9.8 m) high by 30 feet (9.1 m) wide. A player is not counted as out of bounds on
14751-454: The field was shortened to 100 yards (91 m) long, two 10-yard-long (9.1 m) end zones were created, and teams were given four downs instead of three to advance the ball 10 yards (9.1 m). The roughing the passer penalty was implemented in 1914, and eligible players were first allowed to catch the ball anywhere on the field in 1918. On November 12, 1892, Pudge Heffelfinger was paid $ 500 (equivalent to $ 16,956 in 2023) to play
14900-629: The formation of the Intercollegiate Athletic Association of the United States, later renamed the National Collegiate Athletic Association (NCAA). The legal forward pass was introduced in 1906, although its effect was initially minimal due to the restrictions placed on its use. The idea of a 40-yard-wider field was opposed by Harvard due to the size of the new Harvard Stadium . Other rule changes introduced that year included
15049-419: The game clock based on the direction of the appropriate official . A separate play clock is used to show the amount of time within which the offense must initiate a play. The play clock is set to 25 seconds after certain administrative stoppages in play and to 40 seconds when play is proceeding without such stoppages. If the offense fails to start a play before the play clock reads "00", a delay of game foul
15198-409: The game had a strict sense of amateurism at the time, and direct payment to players was frowned upon, if not prohibited outright. Over time, professional play became increasingly common, and with it came rising salaries and unpredictable player movement, as well as the illegal payment of college players who were still in school. The National Football League (NFL), a group of professional teams that
15347-443: The ground or a tee; a holder may be used in either case. On a safety kick, the kicking team kicks the ball from their own 20-yard line. They can punt, drop kick or place kick the ball, but a tee may not be used in professional play. Any member of the receiving team may catch or advance the ball. The ball may be recovered by the kicking team once it has gone at least ten yards and has touched the ground or has been touched by any member of
15496-434: The guards. The principal receivers are the wide receivers (WR) and the tight ends (TE). Wide receivers line up on or near the line of scrimmage, split outside the line. The main goal of the wide receiver is to catch passes thrown by the quarterback, but they may also function as decoys or as blockers during running plays. Tight ends line up outside the tackles and function both as receivers and as blockers. The role of
15645-529: The last half-minute of regulation or overtime (there is only a half-minute warning , as opposed to the two-minute warning in the XFL /NFL and the three-minute warning in the CFL) or because of penalties, injuries or timeouts . The clock also stops for any change in possession, until the ball is marked ready for play; for example, aside from the final half-minute of regulation or overtime, time continues to run down after
15794-490: The league administrators and team owners had allowed player salaries and other costs to rise to the point where the league and many of the teams were losing a substantial amount of money. Late in the summer of 2009, with the team owners unable to agree on a plan for making the league viable again the AFL announced that it was folding, eventually putting its assets up in a Chapter 7 bankruptcy liquidation. The developmental af2, however, played its 2009 season as scheduled. Most of
15943-453: The league canceled its 1988 season, folded half of its franchises (including Mellencamp's), and made an unsuccessful bid for the remaining three teams to join the AFL; the WIFL never played a single game. In 1990, Foster patented the rules of arena football, meaning that only persons authorized by him could use his rules and his name for the sport. While the AFL asserted throughout the 1990s that
16092-403: The league had actively promoted for 20 seasons, and that the change took away a key component of what made arena football a distinctive sport. The iteration of the league that began play in 2024 restored the "ironman" rules at the beginning of the season. After the league reorganized, the league abandoned ironman play and restored free substitution; unlike in 2007, the reason for the 2024 change
16241-494: The league's inaugural season, and Terrell Owens joining the following year ( Michael Vick was also announced as a player midseason but would not play). FCF suspended operations following the 2022 season. The best-known indoor women's football league is the X League (formerly known as the Legends Football League, and Lingerie Football League ). Known for its scantily-clad players and its signature event,
16390-542: The league, resulting in a faster and higher-scoring game that can be played on the floors of indoor arenas . The sport was invented in 1981 , and patented in 1987 , by Jim Foster , a former executive of the National Football League and the United States Football League . The name is trademarked by Gridiron Enterprises and had a proprietary format until its patent expired in 2007. Three leagues have played under official arena football rules:
16539-460: The line of scrimmage and drop into coverage once the Quarterback pump fakes . (Before this rule, the Jack could not drop back into coverage until the ball is thrown or the quarterback is no longer in the pocket , and the Jack had to stay within the box designated by the outside shoulders of the offensive line , the line of scrimmage, and five yards back from the line of scrimmage.) The ball
16688-433: The line of scrimmage, while defensive linemen were hindered by restrictions that prevented them from using certain techniques to penetrate the offensive line. Quarterbacks and placekickers were exempt from the one-platoon system, allowing two key scoring positions to be more specialized. The AFL also adopted the USFL's concept of playing in the late spring and summer, since this is when most hockey and basketball arenas have
16837-506: The most popular sport in the United States by the mid-1960s. The rival AFL arose in 1960 and challenged the NFL's dominance. The AFL began in relative obscurity but eventually thrived, with an initial television contract with the ABC television network. The AFL's existence forced the conservative NFL to expand to Dallas and Minnesota in an attempt to destroy the new league. Meanwhile, the AFL introduced many new features to professional football in
16986-424: The new Arena Football League prior to 2024. Fan Controlled Football launched in 2021 following an interactive format inspired by video games, with "power-ups" and fans voting on plays. It generally targeted a higher caliber of player than the typical indoor league, with outdoor football veterans such as Johnny Manziel , Robert Turbin , Quinton Flowers , Quinn Porter , Shawn Oakman and Josh Gordon playing in
17135-429: The offense advances ten or more yards in the four downs, they are awarded a new set of four downs. If they fail to advance ten yards, possession of the football is turned over to the defense. In most situations, if the offense reaches their fourth down they will punt the ball to the other team, which forces them to begin their drive from farther down the field; if they are in field goal range , they might attempt to score
17284-410: The offense and ensure high-scoring games: To further an offensive passing advantage over the defense, Foster also imposed strict restrictions on the defensive formation, mandating that all defenses were required to play a 3-2-Monster formation with three defensive linemen, two linebackers, two cornerbacks, and one safety. Linebackers were not permitted to blitz and were required to stay in boxes behind
17433-410: The offense's advance and to take control of the ball for themselves. The offense must advance the ball at least ten yards in four downs or plays; if they fail, they turn over the football to the defense, but if they succeed, they are given a new set of four downs to continue the drive . Points are scored primarily by advancing the ball into the opposing team's end zone for a touchdown or kicking
17582-429: The offensive line. Players can line up temporarily in a position whose eligibility is different from what their number permits as long as they report the change immediately to the referee, who then informs the defensive team of the change. Neither team's players, except the center (C), are allowed to line up in or cross the neutral zone until the ball is snapped. Interior offensive linemen are not allowed to move until
17731-425: The offensive team had the lead and did not advance the ball past the line of scrimmage. This prevented the "victory formation" (the offensive team merely kneeling down), or running other plays that are designed solely to exhaust the remaining time rather than to advance the ball downfield. This rule was eliminated in the interest of player safety. In the first overtime , each team gets one possession to score. Whoever
17880-468: The option of attempting a four-point conversion (akin to the three-point conversion seen in the UFL and its predecessors) from the opponent's ten-yard line, alongside the existing extra point and two-point conversion options. The rule was carried over as part of a pre-launch merger with Champions Indoor Football . Teams may go for two points from the 2.5-yard line, three from the 5-yard line, or four from
18029-418: The original league's rulebook with minor variations. Through the late 1990s, the Arena Football League was the only league playing any variant of the sport designed for indoor play. A clarification limiting the scope of its patent allowed for competing indoor football leagues (sometimes known as arena leagues ) to use the same size field and most other aspects of the game. Arena football is distinguished from
18178-450: The other indoor leagues by its use of large rebound nets attached to the side of each goalpost, which keep any missed field goal or overthrown ball in the field of play and allow the ball to remain live; the rebound nets were the only part of the patent that was upheld until it expired. As a result, some non-AFL arena leagues that formed after the patent expired like the National Arena League have used rebound nets, while other leagues such as
18327-498: The padded walls that surround the field are "live"; the end zone walls were not live until the 2006 season. Come 2025 gunners must line up on their own 20-yard line on kickoffs, with one receiving player fielding from the end zone. The scoring is the same as in the NFL with the addition of a drop kick field goal worth four points during normal play or two points as a post-touchdown conversion . Blocked extra points and turnovers on two-point conversion attempts may be returned by
18476-564: The patent covered virtually every aspect of the game (from the 50-yard field to the eight-man format), a 1998 lawsuit ( Arena Football League v. Professional Indoor Football League ) established that the patent specifically covered the rebound net feature, meaning that competitors could not use this aspect of the rules. However, under provisions of U.S. patent law , Foster's patent expired on March 27, 2007, enabling competitors to use rebound nets (at least as originally envisioned, without other innovations that he may have patented). The AFL signed
18625-445: The plane of the two end lines. The crossbar of these posts is 10 feet (3.0 m) above the ground, with vertical uprights at the end of the crossbar 18 feet 6 inches (5.64 m) apart for professional and collegiate play, and 23 feet 4 inches (7.11 m) apart for high school play. The uprights extend vertically 35 feet (11 m) on professional fields, a minimum of 10 yards (9.1 m) on college fields, and
18774-451: The point(s)-after-touchdown (PAT) or conversion, which is a single scoring opportunity. This is generally attempted from the two- or three-yard line, depending on the level of play. If the PAT is scored by a place kick or drop kick through the goal posts, it is worth one point, typically called the extra point. If the PAT is scored by what would normally be a touchdown, it is worth two points; this
18923-422: The punter. In football, the winner is the team that has scored more points at the end of the game. There are multiple ways to score in a football game. The touchdown (TD), worth six points, is the most valuable scoring play in American football. A touchdown is scored when a live ball is advanced into, caught, or recovered in the opposing team's end zone. The scoring team then attempts a try, more commonly known as
19072-626: The rebound nets at the ends of the field. Like the AFL, their playing seasons are entirely or primarily outside the traditional fall/early winter season of the outdoor sport so as not to be competing with it directly for fan support. Since the first such league, the Professional Indoor Football League, began play in the 1998, there has often been a pattern of instability. Each off-season has seen teams jumping from league to league. In addition, leagues have annually merged, changed names, and separated. The organization that
19221-401: The receiving team. The three types of scrimmage kicks are place kicks, drop kicks, and punts. Only place kicks and drop kicks can score points. The place kick is the standard method used to score points, because the pointy shape of the football makes it difficult to reliably drop kick. Once the ball has been kicked from a scrimmage kick, it can be advanced by the kicking team only if it
19370-439: The reduction of playing time from 70 to 60 minutes and an increase of the distance required for a first down from 5 to 10 yards (4.6 to 9.1 m). To reduce infighting and dirty play between teams, the neutral zone was created along the width of the football before the snap. Scoring was also adjusted: points awarded for field goals were reduced to three in 1909 and points for touchdowns were raised to six in 1912. Also in 1912,
19519-542: The rulebook for the 1876 college football season , when the sport first shifted from soccer-style rules to rugby-style rules. Although it could easily have been called "rugby" at this point, Harvard, one of the primary proponents of the rugby-style game, compromised and did not request the name of the sport be changed to "rugby". The terms " gridiron " or "American football" are favored in English-speaking countries where other types of football are popular, such as
19668-457: The second one, the Harvard players preferred the Canadian style of having only 11 men on the field, running the ball without having to be chased by an opponent, the forward pass, tackling, and using an oblong instead of a round ball. An 1875 Harvard–Yale game played under rugby-style rules was observed by two Princeton athletes who were impressed by it. They introduced the sport to Princeton,
19817-503: The secondary, consists of cornerbacks (CB) and safeties (S). Safeties are themselves divided into free safeties (FS) and strong safeties (SS). Cornerbacks line up outside the defensive formation, typically opposite a receiver to be able to cover them. Safeties line up between the cornerbacks but farther back in the secondary. Safeties tend to be viewed as "the last line of defense" and are responsible for stopping deep passing plays as well as breakout running plays. The special teams unit
19966-402: The sidelines unless he is pushed into or falls over the sideline barrier. This rule was put in place before the 2006 season. Before that time, a sideline with only a small amount of space (typically 6" to 12") existed between the sideline stripe and the barrier which would provide the space for a ball carrier to step out of bounds before hitting the sideline barrier. Each team fields 8 players at
20115-411: The snap of the ball. The main backfield positions are the quarterback (QB), halfback/tailback (HB/TB), and fullback (FB). The quarterback is the leader of the offense. Either the quarterback or a coach calls the plays. Quarterbacks typically inform the rest of the offense of the play in the huddle before the team lines up. The quarterback lines up behind the center to take the snap and then hands
20264-531: The sport in the U.S., with another 81,000 college athletes in the NCAA and the NAIA . The National Football League (NFL) has the highest average attendance of any professional sports league in the world . Its championship game, the Super Bowl , ranks among the most-watched club sporting events globally. In 2022, the league had an annual revenue of around $ 18.6 billion, making it the most valuable sports league in
20413-549: The successor to the former team. In 2019, the Tornadoes were an expansion team in the South Division of the American Arena League (AAL) for the 2020 season with Arena Football Hall of Famer and former Storm player Stevie Thomas serving as the team's first head coach and home games at Expo Hall in Tampa, Florida . The 2020 season was then cancelled due to the COVID-19 pandemic . In July 2020, they were approved to join
20562-430: The teams made a sustainable profit and the team owners were eager to see the league continue for another year. However, with the AFL owning 50.1% of the af2, it would fold if the AFL folded. At the end of the 2009 season, a gathering of af2 and remaining AFL team owners set out to form their own organization, originally known as Arena Football 1 (AF1). AF1 went on to purchase all assets of the original AFL and af2, except for
20711-499: The time was played at the collegiate level . The upstart NFL received a boost to its legitimacy in 1925, however, when an NFL team, the Pottsville Maroons , defeated a team of Notre Dame all-stars in an exhibition game . A greater emphasis on the passing game helped professional football to distinguish itself further from the college game during the late 1930s. Football, in general, became increasingly popular following
20860-411: The width of the field, are marked every 5 yards (4.6 m). A one-yard-wide line is placed at each end of the field; this line is marked at the center of the two-yard line in professional play and at the three-yard line in college play. Numerals that display the distance from the closest goal line in yards are placed on both sides of the field every ten yards. Goalposts are located at the center of
21009-408: The winning team decides to defer, the losing team chooses the option the winning team did not select—to receive, kick, or select a goal to defend to begin the second half. Most teams choose to receive or defer, because choosing to kick the ball to start the game allows the other team to choose which goal to defend. Teams switch goals following the first and third quarters. If a down is in progress when
21158-402: The world. Other professional and amateur leagues exist worldwide, but the sport does not have the international popularity of other American sports like baseball or basketball ; the sport maintains a growing following in the rest of North America, Europe, Brazil, and Japan. In the United States, American football is referred to as "football". The term "football" was officially established in
21307-497: Was devised by Jim Foster , a former executive of the United States Football League and the National Football League . He devised his game while watching indoor soccer , another game derived from a sport played outdoors. He worked on the game in the early 1980s, but put any plans for full development of it on hold while the United States Football League, an attempt to play traditional American football in
21456-405: Was especially important as the 2007 expiration of Foster's patent on the rebound nets approached). At times over forty teams participated in this league, almost uniformly in cities which also had minor league ice hockey teams and hence suitable arenas. Shortly before the end of 2008, the Arena Football League announced that it would not be playing a 2009 spring season. During the previous few years,
21605-434: Was in part to justify salary cuts that were required when a previous commissioner—Lee Hutton, who was ousted in the reorganization —made promises to cover higher salaries but had no revenue to fund such promises (since under ironman, a player would fill the roles of what would have otherwise been two roster spots, justifying their higher price compared to a one-way player in other indoor leagues). The league also instituted
21754-520: Was instituted. Despite these new rules, football remained a violent sport. Dangerous mass-formations like the flying wedge resulted in serious injuries and deaths. A 1905 peak of 19 fatalities nationwide resulted in a threat by President Theodore Roosevelt to abolish the game unless major changes were made. In response, 62 colleges and universities met in New York City to discuss rule changes on December 28, 1905. These proceedings resulted in
21903-574: Was moved into the Convention Center in 1964 for the contest between Utah and West Virginia . The game drew just over 6,000 fans, though, and the Liberty Bowl moved to Memphis the next year, where it has remained. Unlike modern indoor football, the size of the playing surface and hence the rules were essentially the same as in the standard outdoor game, with rules updated to deal with contingencies for what could happen indoors, such as
22052-535: Was originally established in 1920 as the American Professional Football Association, aimed to solve these problems. This new league's stated goals included an end to bidding wars over players, prevention of the use of college players, and abolition of the practice of paying players to leave another team. By 1922, the NFL had established itself as America's premier professional football league. The dominant form of football at
22201-455: Was that free substitution would improve the overall quality of football in the league by giving coaches the freedom to put their best players on the field for every play of the game, and that teams would be able to select from a wider player talent pool when building their rosters. Traditionalists, however, believed the rule changes were the beginning of the removal of the " ironman " (two-way offense and defense) style of play of arena football that
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