Fighters to whom he lost include world champions Gene Fullmer, Johnny Saxton, Paul Pender, and Carl "Bobo" Olson. In all, he fought six world champions on ten occasions.
He was defeated by world-class boxers such as Gene Fullmer, Johnny Saxton, Paul Pender, and Carl "Bobo" Olson, with whom he had a combined total of ten fights against six world champions.