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Anthony Quinn as Lewis 'Mountain' Rivera |
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Jackie Gleason as Maish Rennick |
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Mickey Rooney as Army |
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Julie Harris as Grace Miller |
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Stanley Adams as Perelli (as Stan Adams) |
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Madame Spivy as Ma Greeny |
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Val Avery as Young fighter's promoter |
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Herbie Faye as Charlie, the Bartender |
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Jack Dempsey as Himself |
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Muhammad Ali as Himself (as Cassius Clay) |
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Lou Gilbert as Dr. Gilbert |
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Michael Conrad as Ma Greeny's Thug |
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Rory Calhoun as Himself |
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Barney Ross as |
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Willie Pep as |
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Steve Belloise as Hotel Desk Clerk |
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Abe Simon as |
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Stan Ross as |
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J.J. Ballargeon as |
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Paolo Rosi as |
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Alex Miteff as |
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Gus Lesnevich as |
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Al Bain as Police Officer (uncredited) |
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William Calhoun as Self - Rivera's wrestling opponent (uncredited) |
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Nancy Cushman as Woman on Elevator (uncredited) |
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Sig Frohlich as Diner Patron (uncredited) |
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John Indrisano as Barfly Watching TV (uncredited) |
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Arthur M. Mercante as Referee (uncredited) |
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Angelo Rossitto as Midget Wrestler Outside Wrestling Ring (uncredited) |
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David Susskind as Self - Trailor Narrator (uncredited) |
| Directing | Ralph Nelson | Director |
| Art | Nathaniel Burr Smidt | Production Design |
| Production | Jack Grossberg | Associate Producer |
| Production | David Susskind | Producer |
| Sound | Laurence Rosenthal | Original Music Composer |
| Editing | Carl Lerner | Editor |
| Camera | Arthur J. Ornitz | Director of Photography |
| Costume & Make-Up | Dick Smith | Makeup Artist |
| Production | David Golden | Production Manager |
| Costume & Make-Up | John Boxer | Costume Design |
| Writing | Rod Serling | Screenplay |
| Directing | Winifred Leah Laurance | Script Supervisor |
