George Chuvalo
Self
Acting
Henry Cooper
Self
Acting
George Foreman
Self
Acting
Larry Holmes
Self
Acting
Ron Lyle
Self
Acting
Ken Norton
Self
Acting
Leon Spinks
Self
Acting
Earnie Shavers
Self
Acting
Ernie Terrell
Self
Acting
Muhammad Ali
Self
Acting
Rahman Ali
Self (archive footage) (uncredited)
Acting
Joe Frazier
Self
Acting