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| Career Post-Season OSLG Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | OSLG | IP | Years | Single Season Leaderboard |
| 1. | Russell Serra | .1711 | 23.0 | 2001-2004 | |
| 2. | Alfredo Jurez | .1728 | 23.3 | 2027-2029 | |
| 3. | Lamar Fox | .1944 | 33.7 | 2014-2021 | |
| 4. | Lee Jarboe | .1954 | 24.3 | 2001-2007 | |
| 5. | Ringo Russmyer | .2159 | 25.0 | 2008-2008 | |
| 6. | Tony Paz | .2308 | 43.3 | 2001-2011 | |
| 7. | David Evans | .2368 | 22.0 | 2001-2002 | |
| 8. | Kyle Nunn | .2425 | 122.0 | 2012-2018 | |
| 9. | Harry Swint | .2444 | 25.3 | 2003-2003 | |
| 10. | Sexto Teruel | .2467 | 42.7 | 2023-2029 | |
| 11. | Edgardo Castillo * | .2518 | 79.7 | 2004-2015 | |
| 12. | Jewel Brown | .2526 | 27.7 | 2002-2010 | |
| 13. | Donald Granger * | .2530 | 23.0 | 2004-2013 | |
| 14. | Pedro Ramos | .2569 | 40.3 | 2002-2002 | |
| 15. | Darryl Leekong | .2620 | 73.3 | 2011-2025 | |
| 16. | Harry Kirton | .2667 | 89.0 | 2024-2029 | |
| 17. | Amor Aguaijo | .2700 | 27.3 | 2021-2028 | |
| 18. | Leonard Magnan | .2766 | 27.3 | 2014-2018 | |
| 19. | Eric Shapland | .2795 | 44.0 | 2024-2029 | |
| 20. | Jose Valdovinos | .2816 | 28.0 | 2000-2000 | |
| 21. | Melvin Bohrer | .2876 | 39.3 | 2014-2024 | |
| 22. | Simon Munoz | .2877 | 21.0 | 2002-2008 | |
| 23. | Roderigo Pequero | .2883 | 102.7 | 2023-2029 | |
| 24. | Santos Quinonez | .2883 | 44.7 | 2004-2007 | |
| 25. | Tony Kirkland | .2903 | 25.0 | 2018-2020 | |
| Richard Eaker | .2903 | 33.3 | 2000-2002 | ||
| 27. | Deangelo Ramos * | .2920 | 76.0 | 2006-2019 | |
| 28. | Denny Truman | .2927 | 23.7 | 2023-2029 | |
| Huey Pearson | .2927 | 22.0 | 2002-2008 | ||
| 30. | Xalbador Laguna | .2932 | 67.7 | 2020-2029 | |
| 31. | Albert Olmos | .2973 | 20.7 | 2001-2012 | |
| 32. | Robert Garza * | .2977 | 180.3 | 2006-2014 | |
| 33. | Andrew Albury | .3013 | 81.3 | 2004-2013 | |
| 34. | Gilbert Giglio | .3032 | 59.3 | 2018-2026 | |
| 35. | Pete Leighburn | .3038 | 22.0 | 2027-2028 | |
| 36. | Kevin Smith | .3064 | 82.0 | 2021-2029 | |
| 37. | Alfonso Manrique | .3065 | 32.7 | 2027-2029 | |
| 38. | Benny Suarez | .3067 | 130.7 | 2017-2028 | |
| 39. | James Yim * | .3075 | 124.0 | 2005-2012 | |
| 40. | Walter Piccirillo | .3077 | 30.7 | 2024-2028 | |
| Micheal McGriff | .3077 | 27.0 | 2004-2011 | ||
| 42. | George Stoehr | .3090 | 81.7 | 2005-2009 | |
| 43. | Richard San Juan | .3097 | 73.0 | 2021-2029 | |
| 44. | Leo Cleland * | .3101 | 246.3 | 2006-2014 | |
| 45. | Lowell Stang * | .3104 | 104.0 | 2010-2018 | |
| 46. | Osvaldo Pedraza | .3109 | 92.7 | 2006-2015 | |
| 47. | Ben Lamela | .3117 | 263.0 | 2009-2022 | |
| 48. | Armando Mesta | .3118 | 110.6 | 2023-2028 | |
| 49. | Pedro Rodas | .3120 | 33.3 | 2005-2016 | |
| 50. | Chris Curcio | .3131 | 26.7 | 2010-2014 |
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