5-550: The Diamond Stakes is a Listed flat horse race in Ireland open to thoroughbreds aged three years or older. It is run at Dundalk over a distance of 1 mile, 2 furlongs and 150 yards (2,149 metres), and it is scheduled to take place each year in September or October. The event was formerly classed at Listed level and contested on turf over 1 mile and 2 furlongs. For a period it was held at Phoenix Park , and it switched to
10-453: The Curragh in 1991. It used to be restricted to fillies and mares, but it was opened to male horses in 2001. It was staged at Fairyhouse in 2006 and 2007. The Diamond Stakes moved to Dundalk in 2008, and since then it has been run on a Polytrack surface over 1 mile, 2 furlongs and 150 yards. It became Ireland's first non-turf Group race in 2009, when it was promoted to Group 3 status. It
15-545: The weights carried are laid down by an official handicapper to equalise the difference in ability between the runners. In Great Britain, for example, the British Horseracing Authority 's rules define a conditions race as being one "which is none of the following; a Handicap Race or a Novice Race, a race restricted to Maiden Horses, or a race governed by Selling or Claiming provisions." Conditions races are staged at all levels of horse racing. As all of
20-535: The weights carried by the runners are laid down by the conditions attached to the race. Weights are allocated according to the sex of the runners, with female runners carrying less weight than males; the age of the runners, with younger horses receiving weight from older runners to allow for relative maturity, referred to as weight for age ; and the quality of the runners, with horses that have won certain values of races giving weight to less successful entrants. Conditions races are distinct from handicap races , for which
25-519: Was downgraded back to Listed status in 2022. The Diamond Stakes was added to the Breeders' Cup Challenge series in 2009, with the winner earning an automatic invitation to compete in the Breeders' Cup Marathon . It was removed from the series in 2011. Most successful horse since 1988: (2 wins) Leading jockey since 1988 (5 wins): Leading trainer since 1988 (8 wins): Conditions races Conditions races are horse races in which
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