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| Career Post-Season Winning Pct Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | Winning Pct | IP | Years | Single Season Leaderboard |
| 1. | Dwight Roesch | .8333 | 67.0 | 1947-1949 | |
| 2. | James Hanselman | .8000 | 85.0 | 1947-1950 | |
| 3. | Lucien Pillar | .7778 | 82.0 | 1947-1950 | |
| 4. | Joshua Cook | .7500 | 34.3 | 1947-1950 | |
| 5. | Stan Lugo | .6667 | 48.3 | 1947-1949 | |
| 6. | Lavern Bessler | .5000 | 57.3 | 1947-1950 | |
| Corey Hill | .5000 | 45.0 | 1947-1950 | ||
| William Noriega | .5000 | 27.7 | 1947-1950 | ||
| Robert Carreiro | .5000 | 16.0 | 1948-1950 | ||
| Gerald Sarno | .5000 | 49.0 | 1948-1949 | ||
| 11. | Roger Kirwan | .4000 | 62.3 | 1947-1950 | |
| Chet Seiler | .4000 | 46.0 | 1947-1950 |
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