阿瑟·弗兰兹
Arthur Franz
饰：Tommy Nelson
阿黛尔·杰金斯
Adele Jergens
饰：Boots Marsden
谢尔顿·伦纳德
Sheldon Leonard
饰：Boots Morgan
威廉·弗劳利
William Frawley
饰：Det. Roberts
加文缪尔
Gavin Muir
饰：Dr. Philip Gray
约翰·达海姆
John Daheim
饰：Rocky Hanlon (as John Day)
保罗·马克西
Paul Maxey
饰：Dr. James C. Turner, Police Psychiatrist
博比·巴伯
Bobby Barber
饰：Sneaky (uncredited)
Richard Bartell
饰：Bald man (uncredited)
Ralph Brooks
Ralph Brooks
饰：Man (uncredited)
拉斯·康威
Russ Conway
饰：Newspaperman (uncredited)
弗兰克·达埃
Frank Dae
饰：Col. Duffie (uncredited)
Roy Darmour
饰：Man (uncredited)
Sayre Dearing
饰：Reporter (uncredited)
拉尔夫·邓恩
Ralph Dunn
饰：Motorcycle cop (uncredited)
Edward Gargan
饰：Milt (uncredited)
哈罗德·古德温
Harold Goodwin
饰：Bartender (uncredited)
迪克·戈登
Dick Gordon
饰：Man (uncredited)
Kit Guard
饰：Fighter on rowing machine (uncredited)
Chuck Hamilton
Chuck Hamilton
饰：Policeman (uncredited)
斯图尔特·霍姆斯
Stuart Holmes
饰：Ringsider with cigar (uncredited)
肯纳G.肯普
Kenner G. Kemp
饰：Policeman (uncredited)
唐纳德·柯尔
Donald Kerr
饰：Fight spectator behind Boots (uncredited)
Perc Launders
饰：Cop (uncredited)
乔治·J·刘易斯
George J. Lewis
饰：Torpedo Al (uncredited)
Rory Mallinson
饰：Tough guy at bar (uncredited)
拉尔夫·蒙哥马利
Ralph Montgomery
饰：Photographer (uncredited)
威廉·H·奥布莱恩
William H. O'Brien
饰：Fight Crowd Extra (uncredited)
Franklin Parker
饰：Photographer (uncredited)
Charles Perry
饰：Rocky's handler (uncredited)
Syd Saylor
饰：Waiter (uncredited)
卡尔斯克洛弗
Carl Sklover
饰：Lou's handler (uncredited)
Billy Snyder
饰：Newspaperman (uncredited)
Frankie Van
饰：Referee (uncredited)
赫尔伯·维吉兰
Herb Vigran
饰：Stillwell (uncredited)
Billy Wayne
饰：Rooney, Rocky's manager (uncredited)
巴德·阿伯特
Bud Abbott
饰：Bud Alexander
卢·科斯特洛
Lou Costello
饰：Lou Francis
南茜·吉尔德
Nancy Guild
饰：Helen Gray
萨姆·巴尔特
Sam Balter
饰：Radio announcer
Walter F. Appler
饰：Professor Dugan (uncredited)
Howard Banks
饰：Officer (uncredited)
Milt Bronson
饰：Ring announcer (uncredited)
Edith Sheets
饰：Nurse (uncredited)
Jack Shutta
饰：Attendant (uncredited)
哈里·威尔逊
Harry Wilson