Lee J. Cobb (Mike Figlia) and Morris Carnovsky (Yanko Garcos) were both members of the famous Group Theater (1931-1940) and appeared together in the original Broadway production of Odets' "Golden Boy," Carnovsky played the father of the boxer. When the play was filmed with William Holden in his debut role, Cobb played the father.
According to director Jules Dassin, Jack Oakie was completely deaf by the time of this film. "He caused absolutely no delays," Dassin said.