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. Buster Mathis Jr. Mathis was unable to answer the referee's 10 count and Tyson was awarded the victory via knockout. After his victory over Mathis, Tyson's promoter officially announced that he would receive his first Heavyweight title fight against WBC Heavyweight Champion Frank Bruno in March 1996. Tyson and Bruno had previously met in 1989 with Tyson's Undisputed Heavyweight Championship on the line. Tyson dominated Bruno for the entire duration of that fight before knocking him out in the fifth round. In the rematch, Tyson again dominated Bruno, this time knocking him out in the third round to capture the WBC Heavyweight title.