Former world champion Tony Bellew has revealed whose chin he considers the strongest in boxing history:
"You'll never see a chin in boxing like McCullough's again! The greatest chin of all time! Lennox - a monster, he threw everything at him, and he couldn't harm him.
But believe me, Lennox - one of the best punchers this sport has ever seen!" - Bellew wrote on his Twitter page.
Oliver McCall (59-14, 38 KOs) was the WBC heavyweight champion from 1994 to 1995. McCall has never been knocked down and has only suffered one stoppage loss in his career.
In February 1997, he was stopped in a rematch against Lennox Lewis. The referee stopped the fight because McCall was crying and refusing to box.