Doyoun

Doyoun
Racing colours of the Aga Khan
Sire	Mill Reef
Grandsire	Never Bend
Dam	Dumka
Damsire	Kashmir
Sex	Stallion
Foaled	8 March 1985
Country	United Kingdom
Colour	Brown
Breeder	Aga Khan IV
Owner	Aga Khan IV
Trainer	Michael Stoute
Record	7:3-0-3
Major wins
Craven Stakes (1988) 2000 Guineas (1988)
Awards
Timeform rating

Doyoun (8 March 1985 – 5 December 2002) was a British Thoroughbred racehorse and sire, best known for winning the classic 2000 Guineas in 1988. In a racing career which lasted from October 1987 until October 1988 he ran seven times and won three races. After winning his only race as a two-year-old in 1987, Doyoun produced his most impressive performance on his three-year-old debut when he defeated Warning in the Craven Stakes. He won the 2000 Guineas on his next appearance but failed to win again, although he did finish third in the Epsom Derby. He was retired to stud at the end of the season, and after a slow start to his breeding career, sired several important winners including Daylami and Kalanisi. He died in Turkey in 2002.

Doyoun was a "handsome" dark-coated bay horse bred by his owner the Aga Khan. His dam Dumka won the Poule d'Essai des Pouliches for the Aga Knah in 1974 and went on to become a highly successful broodmare. Her other winners included Dalsaan (Hungerford Stakes), Dolpour (Gordon Richards Stakes) and Dafayna (Cork and Orrery Stakes). He was one of many major winners sired by the American-bred Epsom Derby winner Mill Reef who was the Leading sire in Great Britain and Ireland in 1978 and 1987.

Doyoun was sent into training with Michael Stoute, who had trained the Aga Khan's Derby winners Shergar and Shahrastani, at his Beech Hurst Stables in Newmarket, Suffolk. He was ridden in all his races by the Irish jockey Walter Swinburn.