 Gamble was inducted into the U.S. Weightlifting Hall of Fame in York, Pennsylvania, in June 1999.He competed twice in the final of the World's Strongest Man competition.In the 1982 World's Strongest Man he finished 3rd behind compatriot Bill Kazmaier at Magic Mountain, California and at the 1983 World's Strongest Man he placed 5th in a competition won by Geoff Capes in Christchurch, New Zealand.