Racing Photo Gallery

** FILE ** In this May 6, 2006 file photo, Barbaro, ridden by jockey Edgar Prado, wins the Kentucky Derby at Churchill Downs in Louisville, Ky. About 40,000 thoroughbreds are born in the United States each year. About 23,000 make it to the race track. Only 20 run in the Kentucky Derby. A new documentary, "The First Saturday in May," follows six hopefuls on their path to Churchill Downs, including the late Barbaro. (AP Photo/Al Behrman, file)