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| Career Post-Season ERA Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | ERA | IP | Years | Single Season Leaderboard |
| 1. | Ruben Ibarra | 1.080 | 25.0 | 1955-1955 | |
| 2. | Harry Robin | 1.698 | 58.3 | 1953-1954 | |
| 3. | Donald Phillips | 2.589 | 73.0 | 1954-1955 | |
| 4. | David Caviness | 2.731 | 29.7 | 1953-1954 | |
| 5. | Jason Williams | 2.828 | 63.7 | 1952-1953 | |
| 6. | Clyde Pearson | 3.115 | 26.0 | 1955-1955 | |
| 7. | Fabian Cordova | 3.332 | 78.3 | 1952-1955 | |
| 8. | Michael Sturges | 3.500 | 54.0 | 1952-1954 | |
| 9. | Justin Paige | 3.555 | 25.3 | 1953-1954 | |
| 10. | Winfred Converse | 4.304 | 23.0 | 1952-1954 | |
| 11. | Dennis Christian | 4.565 | 23.7 | 1953-1953 | |
| 12. | Antonio Padula | 4.696 | 38.3 | 1952-1953 | |
| 13. | Cameron Hagans | 5.143 | 35.0 | 1953-1953 | |
| 14. | Carl Nicosia | 5.550 | 84.3 | 1952-1955 | |
| 15. | Dante Ruiz | 6.791 | 55.7 | 1952-1954 | |
| 16. | Francis Wachter | 7.000 | 27.0 | 1952-1952 | |
| 17. | Pat Ogren | 8.017 | 21.3 | 1953-1953 | |
| 18. | Tony Delossantos | 8.443 | 26.7 | 1952-1954 |
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