- Ralph Sanford - Hammond
- Esther Howard - Mrs. Kelly
- Bill Baldwin - Bill Brown (Ringside Broadcaster) (uncredited)
- Sam Balter - Championship Fight Announcer (uncredited)
- Don Brodie - Newspaper Reporter (uncredited)
- Ralph Brooks - Newspaper Reporter at Benefit (uncredited)
- Mushy Callahan - Referee Title Fight (uncredited)
- Sayre Dearing - Newspaper Reporter at Benefit (uncredited)
- Paul Dubov - Gangster (uncredited)
- Jimmie Dundee - Tough Tramp in Boxcar (uncredited)
- Joe Gray - Championship Fight Opponent (uncredited)
- Chuck Hamilton - Fight Stadium Guard (uncredited)
- Mike Lally - Well-Wisher in Nightclub (uncredited)
- Hal March - Mobster (uncredited)
- George Meader - Fight Doctor (uncredited)
- Ralph Montgomery - Newspaper Reporter (uncredited)
- Forbes Murray - Speaker at Benefit (uncredited)
- Tim Ryan - Al (Kansas City Manager) (uncredited)
- Court Shepard - Fighter (uncredited)
- Charles Sherlock - Dunne's Cornerman (uncredited)
- Hilda Simms - Maid (uncredited)
- Charles Sullivan - Kansas City Referee (uncredited)
- Ivan Volkman
- Ring Lardner
- Stanley Kramer
- Clem Beauchamp
Capítulo disponible en las siguientes plataformas:
