Sports Exercise rider Callie Witt, 20, dies after training accident Friday at Keeneland April 29, 2022 Jason Frakes, Louisville Courier Journal Comments Off on Exercise rider Callie Witt, 20, dies after training accident Friday at Keeneland Callie Witt, a 20-year-old native of Nebraska, was thrown from a 2-year-old horse Friday. She was an exercise rider for trainer Joe Sharp.