Discover
Leon Errol
Knobby Walsh
Joe Kirkwood Jr.
Joe Palooka
Elyse Knox
Anne Howe
Eduardo Ciannelli
Florini
Joe Sawyer
Lefty
Elisha Cook Jr.
Eugene
Warren Hymer
Ira Eyler
Robert Kent
Ronnie Brewster
Sarah Padden
Mom Palooka
Joe Louis
Himself
Sam McDaniel
Smoky
J. Farrell MacDonald
Long-Count Bowman
Betty Blythe
Mrs. Stafford
Carol Hughes
Mrs. Van Pragg
Eddie Gribbon
Louie, the Louisiana Lion
Manuel Ángeles Ortiz
Manuel Ortiz
Henry Armstrong
Henry Armstrong
Jo Ann Marlowe
Rosie Palooka
Jimmy McLarnin
Jimmy McLarnin
Roger Daniel
Roger Daniel
Lou Nova
Al Costa
Michael Mark
Herman (Pop) Palooka
Ceferino García
Ceferino Garcia
Jack Roper
Waldo, the Wyoming Wildcat
Dave Willock
Mr. Rodney
Sam Hayes
Radio Announcer
Philip Van Zandt
Freddie Wells
John Kelly
Sammy
Emmett Vogan
Fight Commissioner
Carole Donne
Mrs. Oberlander
Russ Vincent
Curly
Directing
Reginald Le Borg
Director
Directing
Reginald Le Borg
Director