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Morning Workout: Racehorse Prepares on Kentucky Derby Day

Saturday's race will be the 140th running of the Kentucky Derby.
Image: A horse goes for a morning workout at Churchill Downs in Louisville on Saturday ahead of the 104th running of the Kentucky Derby.
A horse prepares for a morning workout at Churchill Downs in Louisville on Saturday ahead of the 104th running of the Kentucky Derby.Matt Slocum / AP

A horse prepares for a morning workout at Churchill Downs in Louisville on Saturday ahead of the 140th running of the Kentucky Derby. This year's favorite is California Chrome, who won the Santa Anita Derby earlier this year.