The Kentucky Derby takes place at Churchill Downs on May 2, 2015 in Louisville.
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$1.425 million will go to this year's winner.
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Victor Espinoza celebrates in the winner's circle after riding California Chrome (wearing a traditional victor's blanket of 554 red roses) at the 2014 Kentucky Derby. He will attempt to repeat his win this year with American Pharoah.
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Egyptian-American Ahmed Zayat, owner of favorite American Pharoah, has three horses racing in this year's Kentucky Derby. His horses have finished runner-up three times in the past.
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Kentucky Derby hopeful American Pharaoh has a run over the track at Churchill Downs in Louisville.
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A race fan wearing a festive hat attends the 140th running of the Kentucky Derby at Churchill Downs on May 3, 2014 in Louisville, Kentucky.
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Race fans wearing festive hats cheer prior to the 140th running of the Kentucky Derby at Churchill Downs on May 3, 2014 in Louisville, Kentucky.
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Race fans look out at the crowds.
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A race fan wearing a festive hat and suit attends the 140th running of the Kentucky Derby at Churchill Downs on May 3, 2014 in Louisville, Kentucky.
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California Chrome, ridden by Victor Espinoza, crosses the finish line to win the 140th running of the Kentucky Derby at Churchill Downs on May 3, 2014 in Louisville, Kentucky.
