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Shared credits
Mark Rydell averages 6.46, David Proval averages 6.06. Apart that suggests 6.26; together they average 6.05, a lift of −0.21.
Lift is the average of their films together minus the mean of their two career averages.
Dot size shows IMDb votes; lines are rolling five-film averages. Films with fewer than 1,000 votes are left out.
| Cinderella Liberty | 1973 | 6.7 | 2,684 | Director, Producer | Actor |
| Harry and Walter Go to New York | 1976 | 5.4 | 1,442 | Director | Actor |