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
Mike Tyson vs. Frank Bruno knockout, becoming the new undisputed heavyweight champion in the process. Tyson then embarked on a comeback in hopes of securing a championship match with either Douglas or Evander Holyfield, who were scheduled to face each other for the undisputed heavyweight title on October 25, 1990. Tyson would go on to defeat Henry Tillman, Alex Stewart and Donovan Ruddock twice before being arrested and sentenced to prison for rape. When Tyson was released in 1995, he returned to boxing and easily defeated journeymen Peter McNeeley and Buster Mathis, Jr. This would set up a rematch with Bruno for Bruno's newly won