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 Evander Holyfield (who had defeated Douglas later in 1990) due to a rib injury. In 1992, Tyson was convicted of rape and sentenced to six years in prison, but was released on parole after serving three years. After his release in 1995, he engaged in a series of comeback fights. He won the WBC and WBA titles in 1996, after stopping Frank Bruno and Bruce Seldon. With his defeat of Bruno, Tyson joined Floyd Patterson, Muhammad Ali, Tim Witherspoon, Evander Holyfield, and George Foreman as the only men in boxing history to have regained a heavyweight championship after having lost