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
NWA World Heavyweight Championship about the existence of what became the original Extreme Championship Wrestling. Nick Aldis is the current champion in his second reign. He defeated the former champion Cody on October 21, 2018, at the NWA 70th Anniversary Show in Nashville, Tennessee. NWA World Heavyweight Championship The NWA World Heavyweight Championship is a world heavyweight championship in the National Wrestling Alliance (NWA). Although formally established in 1948, its lineage has been traditionally traced back to the first World Heavyweight Wrestling Championship, which traces its lineage to the title first awarded to George Hackenschmidt in 1905. This effectively makes it the oldest surviving