Elenco - Ringside
Don 'Red' Barry
Mike O'Hara, "King Cobra"
Sheila Ryan
Janet 'J.L.' Brannigan
Tom Brown
Joe O'Hara
Joseph Crehan
Oscar Brannigan
John Cason
Tiger Johnson
Tony Canzoneri
Swinger MarkhamJoey Adams
Duke Hensel
William Edmunds
Professor BergerEdit Angold
Mama Berger
Margia Dean
Joy WhiteHarry Brown
Fight Manager
Lyle Talbot
Radio Announcer
Michael Vallon
Bettor
Sam Flint
DoctorFrankie Van
RefereeDan Tobey
Fight AnnouncerJames J. Casino
Boxer (uncredited)Ned Roberts
Fighter (uncredited)Jimmy Martin
Fight Second
Chester Clute
Timid Man
Jack Perry
Trainer (uncredited)John Breen
Fight Spectoator (uncredited)
Noble 'Kid' Chissell
Fight Spectator (uncredited)Bobby Henshaw
Fight Spectator (uncredited)
Charles Morton
Fight Spectator (uncredited)
Sol Murgi
Fight Spectator (uncredited)
Stanley Price
Fight Spectator (uncredited)Mark Plant
Gangster
Harvey Parry
Bit Role (uncredited)
Al Bain
Fight Spectator (uncredited)