Jockey Steve Cauthen (3) rides Affirmed to win the Belmont Stakes and the Triple Crown narrowly ahead of Alydar, ridden by jockey Jorge Velasquez, at Belmont race track in Elmont, N.Y., in this June 10, 1978 photo. Belmont racetrack celebrates its 100th birthday next Wednesday. (AP Photo)

Jockey Steve Cauthen (3) rides Affirmed to win the Belmont Stakes and the Triple Crown narrowly ahead of Alydar, ridden by jockey Jorge Velasquez, at Belmont race track in Elmont, N.Y., in this June 10, 1978 photo. Belmont racetrack celebrates its 100th birthday next Wednesday. (AP Photo)