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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. | Alfredo Jurez | 1.0000 | 23.3 | 2027-2029 | |
| Larry Riffle | 1.0000 | 25.0 | 2021-2028 | ||
| Roberto Villagomez | 1.0000 | 33.3 | 2017-2020 | ||
| Toney Morales | 1.0000 | 65.3 | 2013-2016 | ||
| 5. | Larry Burkholder | .8889 | 80.0 | 2012-2023 | |
| 6. | Harry Kirton | .8750 | 89.0 | 2024-2029 | |
| Deangelo Ramos * | .8750 | 76.0 | 2006-2019 | ||
| 8. | James Darby | .8462 | 47.0 | 2016-2026 | |
| 9. | Gilbert Giglio | .8333 | 59.3 | 2018-2026 | |
| 10. | Shiro Ogusuku | .8000 | 44.7 | 2026-2027 | |
| John Easterling | .8000 | 29.3 | 2010-2014 | ||
| Sauron Evil | .8000 | 27.7 | 2000-2006 | ||
| Aaron Watson | .8000 | 28.3 | 2000-2003 | ||
| 14. | Dirk Carr | .7778 | 54.3 | 2007-2016 | |
| 15. | Armando Mesta | .7692 | 110.6 | 2023-2028 | |
| Higinio Delmonte | .7692 | 108.3 | 2017-2027 | ||
| 17. | Kevin Smith | .7500 | 82.0 | 2021-2029 | |
| Eneas Reigosa | .7500 | 44.3 | 2026-2029 | ||
| Kazuma Sen | .7500 | 113.6 | 2016-2025 | ||
| Curtis Yoo | .7500 | 61.7 | 2013-2020 | ||
| Michael Halsted | .7500 | 16.7 | 2011-2020 | ||
| James Glasper | .7500 | 65.3 | 2016-2018 | ||
| Gerald Hampton | .7500 | 37.3 | 2006-2016 | ||
| Edgardo Castillo * | .7500 | 79.7 | 2004-2015 | ||
| Jackie Almanza | .7500 | 35.0 | 2002-2012 | ||
| Eric Duty | .7500 | 30.3 | 2003-2012 | ||
| Christopher Partida | .7500 | 34.3 | 2002-2003 | ||
| Jeffrey Cargo | .7500 | 36.7 | 2000-2002 | ||
| 29. | Ralph Ives | .7308 | 269.7 | 2019-2029 | |
| 30. | Scott Bartell | .7273 | 97.6 | 2007-2019 | |
| 31. | Dennis Couch | .7143 | 79.7 | 2027-2029 | |
| Arron Ledford | .7143 | 50.6 | 2017-2027 | ||
| Galon Thrace | .7143 | 90.7 | 2016-2023 | ||
| Ryan Turner * | .7143 | 288.0 | 2002-2021 | ||
| Russell Hults | .7143 | 81.3 | 2006-2017 | ||
| Paul Harrington | .7143 | 63.7 | 2002-2006 | ||
| 37. | Kyle Nunn | .7000 | 122.0 | 2012-2018 | |
| Paul Knutson | .7000 | 82.0 | 2007-2014 | ||
| Dustin Carrasquillo | .7000 | 89.7 | 2001-2009 | ||
| 40. | Paul Hall | .6923 | 131.7 | 2023-2029 | |
| J.J. Cobb | .6923 | 102.7 | 2011-2014 | ||
| 42. | Russ Gobbler | .6667 | 42.3 | 2019-2027 | |
| Darryl Leekong | .6667 | 73.3 | 2011-2025 | ||
| James Alexander | .6667 | 146.3 | 2014-2024 | ||
| Soutarou Seika | .6667 | 65.3 | 2021-2023 | ||
| Thomas Goolsby | .6667 | 18.0 | 2011-2018 | ||
| Hugh Hoots | .6667 | 96.3 | 2005-2016 | ||
| Genaro Anzalone | .6667 | 46.3 | 2009-2016 | ||
| Kelvin Palen | .6667 | 70.0 | 2004-2006 | ||
| Ron Yarbrough | .6667 | 62.0 | 2000-2006 |
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