After completing his military service, Walter Gulick takes a job as a sparring partner at a gym, the owner of which sees potential in Walter as a professional fighter—and takes him under his wing.
| Directing | Phil Karlson | Director |
| Writing | Francis Wallace | Story |
| Production | David Weisbart | Producer |
| Production | Walter Mirisch | Executive Producer |
| Sound | Jeff Alexander | Original Music Composer |
| Camera | Burnett Guffey | Director of Photography |
| Editing | Stuart Gilmore | Editor |
| Art | Cary Odell | Art Direction |
| Art | Edward G. Boyle | Set Decoration |
| Writing | William Fay | Screenplay |
| Costume & Make-Up | Alice Monte | Hairdresser |
| Costume & Make-Up | Lynn F. Reynolds | Makeup Artist |
| Production | Robert E. Relyea | Unit Production Manager |
| Production | Allen K. Wood | Production Supervisor |
| Directing | Jerome M. Siegel | Assistant Director |
| Art | Frank Agnone | Property Master |
| Sound | Lambert E. Day | Sound |
| Sound | Del Harris | Sound Effects Editor |
| Crew | Milt Rice | Special Effects |
| Costume & Make-Up | Irene Caine | Wardrobe Designer |
| Costume & Make-Up | Bert Henrikson | Wardrobe Designer |
| Editing | Marshall M. Borden | Assistant Editor |
| Sound | Robert Tracy | Music Editor |
| Directing | Charlsie Bryant | Script Supervisor |
| Crew | Eugene Busch | Dialogue Coach |
| Crew | Mushy Callahan | Technical Advisor |
| Crew | Tom Parker | Technical Advisor |
