Alan Minter Middleweight Champion Vito Antuofermo's title at the Caesars Palace. He won the title by a 15-round decision and, in a rematch, he retained the world title by a TKO in eight rounds. Minter's run as world champion came to an end on 27 September of that year, when he was stopped on cuts in three rounds to Marvin Hagler at Wembley Arena in London. After the fight was stopped, Minter's supporters caused a riot, throwing beer cans and bottles into the ring and both boxers had to be ushered away by the police. Minter beat fringe contender Ernie Singletary in
Undisputed champion about WBA's alleged lack of desire to support professional boxing outside of the USA. In April 1983, members of United States Boxing Association along with Robert W. Lee (a former WBA vice-president) voted to expand the organisation and form the USBA-International. The organization later changed the name to International Boxing Federation. The inaugural IBF Heavyweight Champion was Larry Holmes, who relinquished the WBC title to accept IBF's recognition, thus helping the newly formed organization to establish its legitimacy. The fragmentation of titles was thus increased. After some negotiations, the heavyweight title was unified in the heavyweight unification series, a series