Hot walker Cesar Zarco works with Kentucky Derby hopeful Union Rags at Churchill Downs in Louisville, Ky., Monday, April 30, 2012. The Kentucky Derby horse race is scheduled for Saturday, May 5. (AP ... more 
Hot walker Cesar Zarco works with Kentucky Derby hopeful Union Rags at Churchill Downs in Louisville, Ky., Monday, April 30, 2012. The Kentucky Derby horse race is scheduled for Saturday, May 5. (AP Photo/Charlie Riedel) less 
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Associated Press | Photo By Charlie Riedel
Mon, Apr 30, 2012 7:03 PM EDT