Cast
William Edmunds
Professor Berger
Sol Murgi
Fight Spectator (uncredited)
Stanley Price
Fight Spectator (uncredited)
Michael Vallon
Bettor
Chester Clute
Timid Man
Jack Perry
Trainer (uncredited)
John Cason
Tiger Johnson
Sam Flint
Doctor
Noble 'Kid' Chissell
Fight Spectator (uncredited)
Don 'Red' Barry
Mike O'Hara, "King Cobra"
Margia Dean
Joy White
Charles Morton
Fight Spectator (uncredited)
Sheila Ryan
Janet 'J.L.' Brannigan
Tom Brown
Joe O'Hara
Joseph Crehan
Oscar Brannigan
ライル・タルボット
Radio Announcer
Harvey Parry
Bit Role (uncredited)
Al Bain
Fight Spectator (uncredited)