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