Competing for your sport's highest achievement shouldn't be a question, but for horse racing's Triple Crown, it's not that simple.

Thirteen horses have won the Triple Crown in American Thoroughbred racing history. Here's a look at the winners and the history of the Triple Crown:

Mott is a Preakness victory away from taking the career Triple Crown, but the 71-year-old trainer won't have a chance to win it with Sovereignty, opting instead to hold the colt out until the Belmont Stakes.