导演 Frank McDonald

Mike O'Hara, "King Cobra" Don 'Red' Barry

Janet 'J.L.' Brannigan Sheila Ryan

Joe O'Hara Tom Brown

Oscar Brannigan 約瑟·克萊漢

Tiger Johnson John Cason

Swinger Markham Tony Canzoneri

Duke Hensel Joey Adams

Professor Berger William Edmunds

Mama Berger Edit Angold

Joy White Margia Dean

Fight Manager Harry Brown

Radio Announcer 莱尔·塔尔博特

Bettor Michael Vallon

Doctor 萨姆·弗林特

Referee Frankie Van

Fight Announcer Dan Tobey

Boxer (uncredited) James J. Casino

Fighter (uncredited) Ned Roberts

Fight Second Jimmy Martin

Timid Man Chester Clute

Trainer (uncredited) Jack Perry

Fight Spectoator (uncredited) John Breen

Fight Spectator (uncredited) Noble 'Kid' Chissell

Fight Spectator (uncredited) Bobby Henshaw

Fight Spectator (uncredited) Charles Morton

Fight Spectator (uncredited) Sol Murgi

Fight Spectator (uncredited) Stanley Price

Gangster Mark Plant

Bit Role (uncredited) Harvey Parry

Fight Spectator (uncredited) Al Bain