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