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 held multiple world championships in four weight classes, including titles
at middleweight, super middleweight, light heavyweight and heavyweight,
and is the only boxer in history to start his professional career at junior middleweight
and go on to win a heavyweight title.