 His dam, Prom Knight, was a daughter of the 1987 Irish Derby winner Sir Harry Lewis, who was a son of the great French runner Alleged, who won back-to-back editions of the Prix de l'Arc de Triomphe.In 2002, Volponi earned the most important win of his career when he won the Breeders' Cup Classic by 6½ lengths, the largest margin in the race's history.In winning the Classic, Volponi overcame odds of 44-to-1 to beat an outstanding field that included runner-up Medaglia d'Oro, Milwaukee Brew, Evening Attire, Macho Uno, Hawk Wing, War Emblem, and Harlan's Holiday, among others.