114 articles
Satono Reve (サトノレーヴ)
Satono Reve (サトノレーヴ), Japanese sprinter foaled 2019 by Lord Kanaloa, owned by Hajime Satomi, trained by Noriyuki Hori; twice won the Takamatsunomiya Kinen and placed in Hong Kong and Royal Ascot Group 1 sprints.
Seabiscuit
Seabiscuit, Depression-era American Thoroughbred racehorse (foaled 1933, by Hard Tack), beat War Admiral in the 1938 Pimlico Special match race, was 1938 Horse of the Year, and won the 1940 Santa Anita Handicap.
Seattle Slew
Seattle Slew (1974-2002), American Thoroughbred, 10th Triple Crown winner (1977) and the first to win it undefeated; Horse of the Year 1977, champion sire of A.P. Indy, distinct from Secretariat and Affirmed.
Secretariat (horse)
Secretariat (1970-1989), "Big Red," American Triple Crown-winning racehorse by Bold Ruler out of Somethingroyal; set still-standing records in the 1973 Derby, Preakness, and Belmont, winning the Belmont by 31 lengths in 2:24.
Seiun Sky (セイウンスカイ)
Seiun Sky (セイウンスカイ), Japanese grey Thoroughbred racehorse and sire (1995–2011), dual 1998 classic winner of the Satsuki Sho and Kikuka Sho; 7 wins from 13 starts, rival of Special Week and King Halo, bred by Nishiyama Stud.
Sierra Leone (horse)
Sierra Leone, 2021 dark bay colt by Gun Runner out of Heavenly Love, $2.3 million yearling, won 2024 Breeders' Cup Classic and Whitney, 2024 champion 3-year-old male, trained by Chad Brown, retired to stud for 2026.
Sirius Symboli (シリウスシンボリ)
Sirius Symboli (シリウスシンボリ, 1982–2012) was a Japanese Thoroughbred who won the 1985 Japanese Derby by three lengths, then ran 14 winless races in Europe including the 1986 Arc, and later sired 120 winners.
Smart Falcon (スマートファルコン)
Smart Falcon (スマートファルコン) is a Japanese Thoroughbred racehorse and stallion, foaled in 2005, who won 23 of 34 dirt starts, including back-to-back JBC Classics, and raised the profile of Japanese dirt racing.
Somethingroyal
Somethingroyal (1952-1983), American Thoroughbred broodmare by Princequillo out of Imperatrice, unraced winner; dam of Triple Crown winner Secretariat and sire Sir Gaylord; 1973 Kentucky Broodmare of the Year.
Sovereignty (horse)
Sovereignty (foaled 22 Feb 2022), Godolphin's Into Mischief colt trained by Bill Mott, won the 2025 Kentucky Derby and Belmont Stakes plus the Travers, was named 2025 Horse of the Year, and won the 2026 Whitney Stakes.
Special Week
Special Week (スペシャルウィーク) was a Japanese Thoroughbred racehorse by Sunday Silence who won the 1998 Japanese Derby, and in 1999 the two Tenno Sho races and the Japan Cup.
Still in Love (スティルインラブ) (horse)
Still in Love (スティルインラブ), 2000-2007 Japanese Thoroughbred filly by Sunday Silence; second filly ever to win the fillies' Triple Crown (2003 Oka Sho, Yushun Himba, Shuka Sho), 2003 Best Three-Year-Old Filly; died 2007 leaving one foal.
Super Creek
Super Creek (スーパークリーク), Japanese Thoroughbred racehorse foaled 27 May 1985 by No Attention, won the 1988 Kikuka Sho, 1989 Tenno Sho Autumn, and 1990 Tenno Sho Spring; 8 wins from 16 starts, rival of Oguri Cap and Inari One.
Tap Dance City (タップダンスシチー)
Tap Dance City (タップダンスシチー), foaled 1997, American-bred Japanese-trained Thoroughbred by Pleasant Tap; won the 2003 Japan Cup by a record 9 lengths, the 2004 Takarazuka Kinen, and three straight Kinko Sho; later a sire.
Thoroughbred
Thoroughbred, English horse breed for flat racing, founded on the Darley Arabian, Godolphin Arabian, and Byerly Turk; defined by the 1791 General Stud Book and American Stud Book registry, averaging 16 hands and 35-40 mph.
Thoroughbred breeding theories
Thoroughbred breeding theories, including Bruce Lowe's figure system, dosage, and the MSTN speed gene test, predict racehorse ability from pedigree; heritability is low to moderate and race times have barely improved in 60 years.
Tiger Roll
Tiger Roll, Irish-bred National Hunt gelding (foaled 2010) by Authorized, won back-to-back Aintree Grand Nationals in 2018 and 2019, the first dual winner since Red Rum in 1974, plus four Cheltenham Festival wins for Gordon Elliott and Gigginstown House Stud.
Tokai Teio (トウカイテイオー)
Tokai Teio (トウカイテイオー), Japanese Thoroughbred racehorse foaled 1988 by Symboli Rudolf; won 1991 Satsuki Sho and Derby, 1992 Japan Cup, 1993 Arima Kinen; 12 starts, 9 wins; JRA Hall of Fame 1995.
Tosen Jordan
Tosen Jordan (トーセンジョーダン), Japanese Thoroughbred racehorse foaled 2006 by Jungle Pocket; won the 2011 Tenno Sho (Autumn) G1 in a Tokyo track-record 1:56.1, second in the 2011 Japan Cup, later a stallion.
Tosho Boy (トウショウボーイ)
Tosho Boy (トウショウボーイ), 1973–1992, Japanese Thoroughbred called the Heavenly Horse; 1976 Horse of the Year, won Satsuki Sho, Arima Kinen, Takarazuka Kinen; sired Triple Crown winner Mr. C.B.; JRA Hall of Fame 1984.
Tsurumaru Tsuyoshi (ツルマルツヨシ)
Tsurumaru Tsuyoshi (ツルマルツヨシ), Japanese Thoroughbred stallion foaled 1995, out of Sweet Cielo by Conquistador Cielo; won 5 of 11 starts including the 1999 Kyoto Daishoten (G2), beating Mejiro Bright and T.M. Opera O; later a lead and merit horse.
Twin Turbo (ツインターボ) (horse)
Twin Turbo (ツインターボ), Japanese Thoroughbred racehorse, bay colt foaled April 13, 1988, by Lyra Ridge out of Racing Jean; 35 starts, 6 wins, three G3 wins (Radio Tampa Sho, Tanabata Sho, All Comers), last of 13 in the 1994 Arima Kinen.
War Admiral
War Admiral (1934-1959), son of Man o' War out of Brushup, was the 1937 Triple Crown winner and Horse of the Year, unbeaten in 8 starts that year, later beaten by Seabiscuit in the 1938 Pimlico Special, and a leading sire.
Winx (horse)
Winx is an Australian Thoroughbred racehorse, foaled 2011, trained by Chris Waller, who won 37 of her 43 starts, including a world record 25 Group 1 victories.