Antonio Deon Tarver (born November 21, 1968) is an American former professional boxer and boxing commentator. In boxing he competed from 1997 to 2015, and held multiple light heavyweight world championships, including the WBA (Unified), WBC, IBF and Ring magazine titles, as well as the IBO light heavyweight and cruiserweight titles. Outside of boxing, Tarver starred as Mason "The Line" Dixon, the heavyweight champion in the 2006 film Rocky Balboa.