Director/a
Tom Gries
DIRECTOR/A
Monte Hellman
Reparto (por orden de créditos)
Muhammad Ali
Cassius Clay
Ernest Borgnine
Angelo Dundee
John Marley
Dr. Ferdie Pacheco
Lloyd Haynes
Herbert Muhammad
Malachi Throne
Payton Jory
Lucille Benson
Mrs. Fairlie
Teddy Wilson
John the Gardener
Annazette Chase
Belinda Ali
Mira Waters
Ruby Sanderson
Chip McAllister
Cassius Clay - Aged 18
Drew Bundini Brown
Drew 'Bundini' Brown
Robert Duvall
Bill McDonald
David Huddleston
Cruikshank
Ben Johnson
Hollis
James Earl Jones
Malcolm X
Dina Merrill
Velvet Green
Roger E. Mosley
Sonny Liston
Paul Winfield
Draft Lawyer
Richard Gullage
Commission Doctor
Arthur Adams
Cassius Clay Senior
Dorothy Meyer
Odessa Clay
Rahman Ali
Rahaman Ali
Howard L. Bingham
Howard Bingham
Richard Venture
Colonel
Stack Pierce
Rahaman
W. Youngblood Muhammad
Ven Medina
Ronnie
Paul Mantee
Carrara
Skip Homeier
Major
Lloyd Wells
George Garro
Mr. Curtis
David Clennon
Captain
Ernie Wheelwright
Bossman Jones
Pat Patterson
George Cooper
Lawyer
James Gammon
Mr. Harry
Gene Kilroy
Toni Crabtree
Hooker
Sally Gries
Sponsor's Wife
Elizabeth Marshall
Don Dunphy
Commentator
Fernand A. Larrieu Jr.
Grocer
Nai Bonet
Suzie Gomez
Harold Conrad
Alberto Martín
Doctor
Walter Olkewicz
Reporter
George Chuvalo
SelfarchiveFootage
Yank Durham
Bob Foster
Buster Mathis
Arthur Mercante
Archie Moore
Ken Norton
Floyd Patterson
Jerry Quarry
Sally Bondi
Bessuncredited
Joe Bugner
Joe Bugneruncredited,archiveFootage
Zach Clayton
Selfuncredited,archiveFootage
Ty Copeman
White Youthuncredited
Barney Felix
Roy Firestone
TV Reporteruncredited
George Foreman
Levi Forte
Gym Boxeruncredited
Bob Gordon
Reporteruncredited
Vic Hunter
Metro Diuncredited
Ken Klingman
Boxer Hitting Heavy Bag in Gymuncredited
Ray Mann
Young Manuncredited
Jack McDermott
Todd Rosen
Kirby Sanders
Reporter 'Can We Quote You'uncredited
Woni Spotts
Child in Crowduncredited
Tracy 'Chubby' Steele
Boxer Hitting Heavy Bag in 5th Street Gymuncredited