An ex-sailor turned boxer finds romance and gets a shot at the heavyweight title.
| Actor | Role |
|---|---|
 Myrna LoyBelle Mercer | Belle Mercer |
 Max BaerSteve Morgan | Steve Morgan |
 Primo CarneraCarnera | Carnera |
 Jack DempseyPromoter | Promoter |
 Walter HustonEdwin J. Bennett ("The Professor") | Edwin J. Bennett ("The Professor") |
 Otto KrugerWillie Ryan | Willie Ryan |
 Vince BarnettBugsie | Bugsie |
 Robert McWadeAdopted Son | Adopted Son |
 Muriel EvansLinda | Linda |
 Jean HowardShow Girl | Show Girl |
 Cora Sue CollinsFarmer's Daughter (uncredited) | Farmer's Daughter (uncredited) |
 Dennis O'KeefeNightclub Patron (uncredited) | Nightclub Patron (uncredited) |
 Jack PennickBar Patron #6 (uncredited) | Bar Patron #6 (uncredited) |
 Matt McHughProfessor's Drinking Buddy (uncredited) | Professor's Drinking Buddy (uncredited) |