Career
He held the WBA light heavyweight title and also fought at cruiserweight. Gregory trained at the Police Athletic Leagues Howard Houses in Brooklyn, New New York Known as "Flame", Muhammad turned pro in 1972 and in 1977 challenged WBA Light Heavyweight Title holder Víctor Galíndez but lost a unanimous decision.
Later in 1981 he would lose his title as well in a defense against Michael Spinks via unanimous decision.
After losing the belt, Muhammad fought mainly club level fighters before landing another shot at a title in 1985, the Vacant IBF Light Heavyweight Title, pitted against Slobodan Kacar. Muhammad made a brief comeback in 1988, but hung up the gloves for good later that year after losing via TKO to journeyman Arthel Lawhorne.
He also appeared in two motion pictures: the 1980 film Raging Bulletin, playing the role of Billy Fox. And Leon Isaac Kennedy"s 1981 version of Body and Soul, where he portrayed himself.