The famous Churchill Downs racetrack in Louisville, Ky., hosts one of the biggest horse races in the world.
The Kentucky Derby: The 138th Run for the Roses
The famous Churchill Downs racetrack in Louisville, Ky., hosts one of the biggest horse races in the world.
Morry Gash / AP
Jockey Mario Gutierrez rides I'll Have Another to victory in the 138th Kentucky Derby horse race at Churchill Downs on May 5, 2012, in Louisville, Ky.
