Elenco (na ordem dos créditos)
Muhammad Ali
Self
Jürgen Blin
Self (archiveFootage)
Drew Bundini Brown
Jim Brown
Self - Audience Member
Bobby Chacon
Self - Guest
Henry Clark
Odessa Clay
John Conteh
Howard Cosell
Self - Ringside Commentator
Angelo Dundee
Chickie Ferrara
Self - Trainer
Jackie Fields
George Foreman
Frank Gifford
Gene Gilroy
Buddy Hackett
Tommy Hannah
Ferd Hernandez
Self - Referee
Chuck Hull
Self - Ring Announcer
Alan King
Don King
Bobby Lewis
Self - Cornerman
Joe Louis
Ron Lyle
Buster Mathis
Armando Muniz
Ferdie Pacheco
Elton H. Rule
Young Sanford
Howard Smith
Self -Guest