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. Lionel Butler round. After the knockdown, the referee ended the fight and Lewis was named the winner by technical knockout at 2:55 of the fifth round. Lewis' victory was originally supposed to make him the mandatory challenger for the WBC heavyweight title, which McCall was to defend against Frank Bruno later in the year on September 2. Bruno would win the title after defeating McCall by unanimous decision, however, the WBC bumped Lewis aside and instead made the returning Mike Tyson their number one contender, giving him the first shot at Bruno. Lewis would threaten the WBC with legal action in attempt