Claim: Secretariat, an American Thoroughbred racehorse that became the first Triple Crown winner in 25 years, won the 1973 Triple Crown Trophy.
Evidence: Secretariat 1973 Secretariat (March 30, 1970 – October 4, 1989) was an American Thoroughbred racehorse who, in 1973, became the first Triple Crown winner in 25 years.