Michael Moorer, American boxer
Michael Lee Moorer (born November 12, 1967) is an American former professional boxer who competed from 1988 to 2008. He won a world championship on four separate occasions in two weight classes, having held the WBO light heavyweight title from 1988 to 1991; compiling 22 straight KOs in 22 fights and the WBO heavyweight title from 1992 to 1993; the unified WBA, IBF and lineal heavyweight titles in 1994; and regained the IBF heavyweight title again from 1996 to 1997 becoming a three-time heavyweight world champion.Michael Moorer was an undefeated southpaw in his first 35 professional bouts. He captured the WBO light heavyweight title in 1988 which he defended 9 times. In 1991, Moorer moved up to Heavyweight winning the vacant WBO heavyweight title from Bert Cooper via TKO in 1992. He went on to defeat Evander Holyfield for the unified WBA, IBF and lineal heavyweight titles in 1994. He remains the only southpaw to win the lineal world championship at heavyweight and the only light heavyweight world champion to win a heavyweight world title on more than one occasion.

Moorer is only one of four boxers over the last century that has ever won a version of a world title at both light heavyweight and heavyweight along with Roy Jones Jr., Michael Spinks, and James Toney.

Since retiring from the sport, Moorer has worked as a boxing trainer. In 2009, he worked alongside Freddie Roach at the Wild Card gym in Los Angeles.