Elenco (na ordem dos créditos)
Jack Drees
Self - Ringside Commentator
Sonny Liston
Self
Joe Louis
Self - Guest
Sonny Weismann
Self - Referee
Rocky Marciano
Angelo Dundee
Self - Trainer
Chico Vejar
Joey Giambra
Dick Tobin
Self - Ring ANnouncer
Joey Brown
Johnny Saxton
Larry Boardman
Al Berl
Sugar Ray Robinson
Barney Ross
Ben Bentley
Self - Ring Announcer
Gene Fullmer
Carmen Basilio
Frank Sikora
Kid Gavilan
Max Baer
Buddy Baer
Archie Moore
Tony Zale
Danny Hodge
Jack Sharkey
Wayne Bethea
Pat Kerwin
Julio Mederos
Art Norris
Yvon Durelle
Truman Sturdevant
Cleveland Williams
Jimmy Peerless
Russ Hodges