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