"Lux Radio Theater" broadcast a 60-minute radio adaptation of the movie onNovember 15, 1948, with John Garfield reprising his film role.
"Screen Director's Playhouse" broadcast a 30 minute radio adaptation of the movie on November 11, 1949 with John Garfield and William Conrad reprising their film roles.
A remarkable eight members of the cast and crew went on to become directors: actors William Conrad and Joseph Pevney, writer Abraham Polonsky, cinematographer James Wong Howe, editor Robert Parrish, art director Nathan Juran, assistant director Robert Aldrich and script supervisor Don Weis. Additionally, set decorator Edward Boyle directed a film in the silent era.
An extremely large number of the cast and crew on the film - writer Abraham Polonsky, actors John Garfield, Anne Revere, Lloyd Gough, Canada Lee, Art Smith, Shimen Ruskin, producer Bob Roberts and even, albeit to a lesser extent, cinematographer James Wong Howe - found themselves either blacklisted or greylisted during the HUAC witch hunts of the 1950s, while director Robert Rossen only avoided that fate by naming names.
The poem quoted by Peg Born (Lilli Palmer) is "The Tiger" by William Blake, an English poet and artist.
To get a more fluid camera movement in the boxing ring, cinematographer James Wong Howe filmed the fight while holding the camera and being pushed by an assistant as he wore roller skates.