Seattle Slew

Seattle Slew (February 15, 1974 – May 7, 2002) was a champion American Thoroughbred racehorse who became the tenth winner of the American Triple Crown (1977). He was the only horse to have won the Triple Crown while being undefeated in any previous race. Justify became the second horse to accomplish this feat. Seattle Slew was the 1977 Horse of the Year and a champion at ages two, three, and four. In the Blood-Horse magazine List of the Top 100 U.S. Racehorses of the 20th Century Seattle Slew was ranked ninth. Joe Hirsch of the Daily Racing Form wrote of Seattle Slew's three-year-old campaign: "Every time he ran he was an odds-on favorite, and the response to his presence on the racetrack, either for a morning workout or a major race, was electric. 'Slewmania' was a virulent and widespread condition." Seattle Slew later became an outstanding sire and broodmare sire, leading the North American sire list in 1984 when his son Swale won the Kentucky Derby and Belmont Stakes. Another son, A.P. Indy, won the Belmont Stakes and continued the sire line through descendants such as Mineshaft, Tapit, and California Chrome. He is a maternal great-great-grandsire of 2026 Kentucky Derby winner Golden Tempo.