Walter F. Appler
Professor Dugan (uncredited)
Phil Bloom
Fight Spectator (uncredited)
Milt Bronson
Ring Announcer (uncredited)
Tom Coleman
Dugan Detective School Graduate (uncredited)
Russ Conway
Newspaperman (uncredited)
Paul Cristo
Fight Spectator (uncredited)
Jack Deery
Hospital Visitor (uncredited)
Ralph Dunn
Motorcycle Cop (uncredited)
Kit Guard
Fighter on Rowing Machine (uncredited)
Bobby Hale
Graduation Spectator (uncredited)
Stuart Holmes
Fight Spectator (uncredited)
Donald Kerr
Fight Spectator (uncredited)
Rory Mallinson
Tough Guy in Bar (uncredited)
Mathew McCue
Graduation Spectator (uncredited)
Hans Moebus
Restaurant Patron (uncredited)
Ralph Montgomery
Photographer (uncredited)
Mike Morelli
Training Spectator (uncredited)
William H. O'Brien
Fight Spectator (uncredited)
Monty O'Grady
Fight Spectator (uncredited)
Franklin Parker
Photographer (uncredited)
Jack Perrin
Dugan Detective School Graduate (uncredited)
Jack Perry
Rocky's Handler (uncredited)
Clark Ross
Fight Spectator (uncredited)
Carl Sklover
Lou's Handler (uncredited)
Billy Snyder
Newspaperman (uncredited)
Brick Sullivan
Dugan Detective School Graduate (uncredited)
Billy Wayne
Rooney - Rocky's Manager (uncredited)