Muhammad Ali 21 during an elimination bout following Rocky Marciano's retirement. Mike Tyson broke both records in 1986 when he defeated Trevor Berbick to win the heavyweight title at age 20. Soon after the Liston fight, Clay changed his name to Cassius X, and then later to Muhammad Ali upon converting to Islam and affiliating with the Nation of Islam. Ali then faced a rematch with Liston scheduled for May 1965 in Lewiston, Maine. It had been scheduled for Boston the previous November, but was postponed for six months due to Ali's emergency surgery for a hernia three days before. The fight
Muhammad Ali vs. Larry Holmes Muhammad Ali vs. Larry Holmes Larry Holmes vs. Muhammad Ali, billed as "The Last Hurrah", was a professional boxing match contested on October 2, 1980 in Las Vegas for the WBC and Lineal Heavyweight Championships. The fight was estimated to have been watched by a record 2billion viewers worldwide. After defeating Leon Spinks to regain the WBA heavyweight title on September 15, 1978. Ali announced his retirement in June 1979. On February 14, 1980, Ali told the Associated Press that he was 75 percent sure that he would return to the ring. On March 5, he agreed to fight John