Oliver McCall Oliver McCall Oliver McCall (born April 21, 1965) is an American former professional boxer who competed from 1985 to 2014. He is best known for winning the WBC heavyweight title in 1994 by scoring an upset knockout victory over Lennox Lewis. The next year he defended the title against Larry Holmes before losing it to Frank Bruno. McCall would also become known for an in-ring mental breakdown during his 1997 rematch with Lewis. Known as "The Atomic Bull", McCall turned pro in 1985 and slowly worked his way up the heavyweight ranks. He beat Jesse Ferguson and future heavyweight champion
Lennox Lewis vs. Oliver McCall II Tommy Morrison and Ray Mercer, defeating them by technical knockout and majority decision respectively. Meanwhile, McCall successfully defended his WBC title against Holmes in a close unanimous decision victory. Following that victory, McCall was challenged by another British fighter in Frank Bruno. Bruno was able to build a big lead on the judges scorecards and withstood a late McCall rally to capture the WBC Heavyweight Championship. Bruno would then move on to defend his new title against the returning Mike Tyson, who stopped Bruno in three rounds to become the new WBC champion. After Tyson's victory over Bruno, Lewis became