Roy Levesta Jones Jr.´s boxing career started before 1990 .
Roy Levesta Jones Jr. ( born January 16 , 1969 ) is an American former professional boxer , boxing commentator , boxing trainer , rapper , and actor who holds dual American and Russian citizenship.  He competed in boxing from 1989 to 2018 , and is a six-time world champion in four weight classes , having held titles at middleweight , super middleweight , light heavyweight , and heavyweight ; and is the only boxer in history to start his professional career at light middleweight and go on to win a heavyweight title .
Roy Jones Jr.