Victor Riches slideshow about American Pharoah, the upcoming Belmont Stakes, and the elusive Triple Crown that he seeks to win. With trainer Bob Baffert and jockey Victor Espinoza teaming up once again, is American Pharoah the favorite? Will another thoroughbred that hasn't run in the first two legs, the Kentucky Derby or the Preakness Stakes, steal the show? Who has won the Triple Crown?