Commanche Run got his first win twelve days later on 28 May at Doncaster Racecourse. Moving up in company, the colt ran third in the 1984 King Edward VII Stakes and the Princess of Wales's Stakes, then won his next two starts at Goodwood Racecourse, taking both the Gordon and the March Stakes. Under jockey Lester Piggott, Commanche Run went on to win three Group One races, capturing the Benson & Hedges Gold Cup, Irish Champion Stakes and the Classic St. Leger Stakes. Retired to stud duty at Coolmore Stud in Ireland, Commanche Run met with limited success. In 1999 he was
Irish St. Leger 1915, and it was originally restricted to three-year-olds. The first horse to win both the English and Irish St Legers was Royal Lancer in 1922. The first Irish St. Leger winner to complete a Triple Crown (having previously won the Irish 2,000 Guineas and the Irish Derby) was Museum in 1935. The only subsequent horse to win all three races was Windsor Slipper in 1942. The Irish St Leger became an open-age race in 1983, and there have been several repeat winners since then. The most successful has been Vinnie Roe, with four consecutive victories from 2001 to 2004. The