Champion was a British Thoroughbred racehorse and sire. In a career that lasted from May 1800 to May 1802 he ran nine times and won five races. In the summer of 1800 he proved himself one of the best British colts of his generation, winning The Derby on his racecourse debut. Later that year he became the first Derby winner to win the St Leger, a feat which was not equalled until 1848. He was retired from racing after being injured on his only start as a five-year-old in 1802.

The St Leger Stakes is a Group 1 flat horse race in Great Britain open to three-year-old thoroughbred colts and fillies. It is run at Doncaster over a distance of 1 mile, 6 furlongs and 115 yards, and it is scheduled to take place each year in September.