 He was the leading trainer at Delaware Park Racetrack on four occasions, won twenty titles at Laurel Park Racecourse and another twenty-five at Pimlico Race Course.He led all Maryland trainers in wins for four straight years between 1993 through 1996 and has won five races in one day four times and on another occasion won six races on one card.On April 20, 2015, Leatherbury's induction into the National Museum of Racing and Hall of Fame was announced.