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| Career Post-Season OOPS Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | OOPS | IP | Years | Single Season Leaderboard |
| 1. | Russell Serra | .3439 | 23.0 | 2001-2004 | |
| 2. | Alfredo Jurez | .3728 | 23.3 | 2027-2029 | |
| 3. | Lamar Fox | .4081 | 33.7 | 2014-2021 | |
| 4. | Lee Jarboe | .4375 | 24.3 | 2001-2007 | |
| 5. | Edgardo Castillo * | .4449 | 79.7 | 2004-2015 | |
| 6. | Ringo Russmyer | .4763 | 25.0 | 2008-2008 | |
| 7. | Leonard Magnan | .4807 | 27.3 | 2014-2018 | |
| 8. | Amor Aguaijo | .4870 | 27.3 | 2021-2028 | |
| 9. | Donald Granger * | .4883 | 23.0 | 2004-2013 | |
| 10. | Pete Leighburn | .4913 | 22.0 | 2027-2028 | |
| 11. | Tony Paz | .4970 | 43.3 | 2001-2011 | |
| 12. | David Evans | .4987 | 22.0 | 2001-2002 | |
| 13. | Jewel Brown | .5003 | 27.7 | 2002-2010 | |
| 14. | Harry Swint | .5118 | 25.3 | 2003-2003 | |
| 15. | James Yim * | .5149 | 124.0 | 2005-2012 | |
| 16. | Gilbert Giglio | .5219 | 59.3 | 2018-2026 | |
| 17. | Darryl Leekong | .5233 | 73.3 | 2011-2025 | |
| 18. | Pedro Ramos | .5245 | 40.3 | 2002-2002 | |
| 19. | Sexto Teruel | .5281 | 42.7 | 2023-2029 | |
| 20. | Harry Kirton | .5286 | 89.0 | 2024-2029 | |
| 21. | Kyle Nunn | .5294 | 122.0 | 2012-2018 | |
| 22. | Deangelo Ramos * | .5343 | 76.0 | 2006-2019 | |
| 23. | Denny Truman | .5399 | 23.7 | 2023-2029 | |
| 24. | Richard Eaker | .5422 | 33.3 | 2000-2002 | |
| 25. | Xalbador Laguna | .5470 | 67.7 | 2020-2029 | |
| 26. | Kelvin Palen | .5476 | 70.0 | 2004-2006 | |
| 27. | Albert Olmos | .5505 | 20.7 | 2001-2012 | |
| 28. | Tony Kirkland | .5507 | 25.0 | 2018-2020 | |
| 29. | Kevin Smith | .5508 | 82.0 | 2021-2029 | |
| 30. | Ben Lamela | .5548 | 263.0 | 2009-2022 | |
| 31. | Lowell Stang * | .5567 | 104.0 | 2010-2018 | |
| 32. | Huey Pearson | .5601 | 22.0 | 2002-2008 | |
| 33. | Santos Quinonez | .5626 | 44.7 | 2004-2007 | |
| 34. | Osvaldo Pedraza | .5629 | 92.7 | 2006-2015 | |
| 35. | Leo Cleland * | .5632 | 246.3 | 2006-2014 | |
| 36. | Jose Valdovinos | .5647 | 28.0 | 2000-2000 | |
| 37. | Simon Munoz | .5662 | 21.0 | 2002-2008 | |
| 38. | Chris Curcio | .5680 | 26.7 | 2010-2014 | |
| 39. | Andrew Albury | .5684 | 81.3 | 2004-2013 | |
| 40. | Roderigo Pequero | .5689 | 102.7 | 2023-2029 | |
| 41. | Thomas Mercier | .5713 | 34.0 | 2012-2018 | |
| 42. | Joseph Seybert | .5748 | 31.3 | 2003-2003 | |
| 43. | Thomas Burleson | .5762 | 25.3 | 2011-2019 | |
| 44. | Robert Garza * | .5767 | 180.3 | 2006-2014 | |
| 45. | Micheal McGriff | .5769 | 27.0 | 2004-2011 | |
| 46. | Clarence McNatt * | .5778 | 245.3 | 2003-2017 | |
| 47. | Eric Shapland | .5789 | 44.0 | 2024-2029 | |
| 48. | Ralph Ives | .5817 | 269.7 | 2019-2029 | |
| 49. | Ryan Turner * | .5828 | 288.0 | 2002-2021 | |
| 50. | Randall Spates | .5833 | 33.7 | 2007-2015 |
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