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