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 Historic Light Heavyweight Championship the new NWA World Historic Light Heavyweight Championship belt and named El Texano Jr., the final CMLL-recognized NWA World Light Heavyweight Champion, as the inaugural champion. The current champion is Stuka Jr., who defeated Hechicero to win the championship on August 14, 2018. This is Stuka Jr.'s first title reign; his current reign is the seventh in the title's history. All title matches take place under best two-out-of-three falls rules. The first light heavyweight division professional wrestling championship recognized in Mexico was the Mexican National Light Heavyweight Championship, created in 1942, sanctioned by the Mexico City boxing and wrestling commission