Heavyweight unification series Heavyweight unification series The heavyweight unification series, also known as the Heavyweight World Series, was a sequence of professional boxing matches held in 1986 and 1987 to crown an undisputed champion of the heavyweight class. The series was produced by HBO Sports and promoted by Don King. It ended with Mike Tyson as undisputed champion, holding the championship belts of the International Boxing Federation, World Boxing Association, and World Boxing Council. Prior to the series, the last undisputed heavyweight champion had been Leon Spinks, who won the championship in his 1978 victory over Muhammad Ali. Spinks had been stripped of
Kevin McBride record as a professional. Despite standing and weighing 282 pounds to Page's and 205 pounds, McBride was outworked and out punched by his smaller, faster, more aggressive opponent. On 9 April 2011 McBride fought former cruiserweight and light heavyweight world champion Tomasz Adamek for the IBF International Heavyweight and NABO Heavyweight Championship belts at the Prudential Center in Newark, New Jersey. Adamek won a 12-round unanimous decision. His most recent defeat was on 29 July 2011 against Polish boxer Mariusz Wach, during a boxing gala held at Mohegan Sun Casino, Uncasville, Connecticut. It was Mcbride's third consecutive defeat against a