The Greatest

Muhammad Ali

Cassius Clay / Muhammad Ali

Ernest Borgnine

Angelo Dundee

John Marley

Dr. Ferdie Pacheco

Lloyd Haynes

Herbert Muhammad

Malachi Throne

Payton Jory

Lucille Benson

Mrs. Fairlie

Teddy Wilson

Joe The Gardener

Annazette Chase

Belinda Ali

Mira Waters

Ruby Sanderson

Chip McAllister

Cassius Clay aged 18

Drew Bundini Brown

Himself

Robert Duvall

Bill McDonald