In baseball statistics , bases on balls per nine innings pitched ( BB/9IP or BB/9 ) or walks per nine innings (denoted by W/9 ) is the average number of bases on balls , (or walks ) given up by a pitcher per nine innings pitched . It is determined by multiplying the number of bases on balls allowed by nine, and dividing by the number of innings pitched. It is a measure of the bases on balls ability of a pitcher.
5-573: All but one of the top 25 single-season leaders in BB/9IP through 2018 pitched in the period of 1876-84. George Zettlein was the all-time single-season leader (0.2308 in 1876), followed by Cherokee Fisher (0.2355 in 1876) and George Bradley (0.2755 in 1880). The highest single-season modern day baseball performance was by Carlos Silva (0.4301 in 2005). The all-time career leaders in BB/9IP through 2022 were Candy Cummings (0.4731), Tommy Bond (0.4787), and Al Spalding (0.5114), all of whom played in
10-830: The Chicago White Stockings , Troy Haymakers , Brooklyn Eckfords , Philadelphia White Stockings of the National Association (NA), and the Philadelphia Athletics (1860–1876) of the National League . Zeittlein served in the American Civil War , in both the Army and Navy. He began playing baseball in 1865 for Eckford of Brooklyn in the National Association of Base Ball Players , the amateur-only predecessor to
15-823: The Troy Haymakers and Brooklyn Eckfords , combining for 15 wins and 16 losses between the two teams. He won 36 games for the Philadelphia White Stockings in 1873, then returned to the Chicago White Stockings for two seasons. Partway through the 1875 season, Zettlein rejoined the Philadelphia White Stockings, and ended his career in 1876 with the Philadelphia Athletics. He finished his major league career with 129 wins, 112 losses, and
20-634: The 1870s and 1880s. The active career leaders in BB/9IP through 2022 were Corey Kluber (1.9683), Michael Pineda (1.9719), and Hyun Jin Ryu (1.9914). This baseball -related article is a stub . You can help Misplaced Pages by expanding it . George Zettlein George Zettlein (July 12, 1844 – May 22, 1905) was an American professional baseball pitcher . He played six seasons in Major League Baseball from 1871 to 1876 for
25-632: The NA. He joined the Brooklyn Atlantics in 1866, and remained with the team until 1870. In 1871, Zettlein joined the professional White Stockings of the NA, and in May 1871 he gave up the new league's first home run . He gave up the league's first grand slam in September. He had a record of 18–9 with a league-leading 2.73 earned run average that year. The following season, Zettlein played for
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