Muhammad Ali

Character: Cassius Clay / Muhammad Ali

Ernest Borgnine

Character: Angelo Dundee

John Marley

Character: Dr. Ferdie Pacheco

Lloyd Haynes

Character: Herbert Muhammad

Lucille Benson

Character: Mrs. Fairlie

Sally Bondi

Character: Bess

Malachi Throne

Character: Payton Jory

Teddy Wilson

Character: Joe The Gardener

Annazette Chase

Character: Belinda Ali

Mira Waters

Character: Ruby Sanderson

Chip McAllister

Character: Cassius Clay aged 18

Drew Bundini Brown

Character: Himself

Robert Duvall

Character: Bill McDonald

David Huddleston

Character: Cruikshank

Ben Johnson

Character: Hollis

James Earl Jones

Character: Malcolm X

Dina Merrill

Character: Velvet Green

Roger E. Mosley

Character: Sonny Liston

Paul Winfield

Character: Draft Lawyer

Richard Gullage

Character: Commission Doctor

Arthur Adams

Character: Cassius Clay Sr.

Dorothy Meyer

Character: Odessa Clay

Rahman Ali

Character: Rahman Ali

Howard Bingham

Character: Howard Bingham

Richard Venture

Character: Colonel

Stack Pierce

Character: Rahaman

W. Youngblood Muhammad

Character: W. Youngblood Muhammad

Ven Medina

Character: Ronnie

Paul Mantee

Character: Carrara

Skip Homeier

Character: Major

Lloyd Wells

Character: Lloyd Wells

George Garro

Character: Mr.Curtis

David Clennon

Character: Captain

Ernie Wheelwright

Character: Bossman Jones

Pat Patterson

Character: Pat Patterson

George Cooper

Character: Lawyer

James Gammon

Character: Mr. Harry

Gene Kilroy

Character: Gene Kilroy

Toni Crabtree

Character: Hooker

Sally Gries

Character: Sponsor's Wife

Elizabeth Marshall

Character: Sponsor's Wife

Don Dunphy

Character: Commentator

Fernand A. Larrieu Jr.

Character: Grocer

Nai Bonet

Character: Suzie Gomez

Harold Conrad

Character: Harold Conrad

Alberto Martín

Character: Doctor

Walter Olkewicz

Character: Reporter

Roy Firestone

Character: TV Reporter (uncredited)