cast
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Muhammad Ali
Cassius Clay / Muhammad Ali
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Ernest Borgnine
Angelo Dundee
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John Marley
Dr. Ferdie Pacheco
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Lloyd Haynes
Herbert Muhammad
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Lucille Benson
Mrs. Fairlie
- Sally Bondi Bess
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Malachi Throne
Payton Jory
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Teddy Wilson
Joe The Gardener
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Annazette Chase
Belinda Ali
- Mira Waters Ruby Sanderson
- Chip McAllister Cassius Clay aged 18
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Drew Bundini Brown
Himself
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Robert Duvall
Bill McDonald
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David Huddleston
Cruikshank
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Ben Johnson
Hollis
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James Earl Jones
Malcolm X
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Dina Merrill
Velvet Green
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Roger E. Mosley
Sonny Liston
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Paul Winfield
Draft Lawyer
- Richard Gullage Commission Doctor
- Arthur Adams Cassius Clay Sr.
- Dorothy Meyer Odessa Clay
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Rahman Ali
Rahman Ali
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Howard Bingham
Howard Bingham
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Richard Venture
Colonel
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Stack Pierce
Rahaman
- W. Youngblood Muhammad W. Youngblood Muhammad
- Ven Medina Ronnie
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Paul Mantee
Carrara
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Skip Homeier
Major
- Lloyd Wells Lloyd Wells
- George Garro Mr.Curtis
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David Clennon
Captain
- Ernie Wheelwright Bossman Jones
- Pat Patterson Pat Patterson
- George Cooper Lawyer
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James Gammon
Mr. Harry
- Gene Kilroy Gene Kilroy
- Toni Crabtree Hooker
- Sally Gries Sponsor's Wife
- Elizabeth Marshall Sponsor's Wife
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Don Dunphy
Commentator
- Fernand A. Larrieu Jr. Grocer
- Nai Bonet Suzie Gomez
- Harold Conrad Harold Conrad
- Alberto Martín Doctor
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Walter Olkewicz
Reporter
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Roy Firestone
TV Reporter (uncredited)