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| Career On-Base Pct Leaderboard | |
| * - Indicates Hall of Fame | |
| Bold - Indicates active player |
| Rank | Player | On-Base Pct | PA | Last Year | Single Season Leaderboard |
| 1. | Jose Brisco | .4375 | 4078 | 2006 | |
| 2. | Burt Brooke | .4293 | 3879 | 2006 | |
| 3. | Paul Pina * | .4263 | 9693 | 2014 | |
| 4. | Joseph Lowry * | .4245 | 10766 | 2015 | |
| 5. | Andrew Stafford | .4233 | 3357 | 2005 | |
| 6. | William Reedy * | .4219 | 10883 | 2016 | |
| 7. | Wally Sutcliffe | .4207 | 3148 | 2025 | |
| 8. | Wallace Beauchesne | .4203 | 5442 | 2025 | |
| 9. | Barton Emrich * | .4199 | 4652 | 2008 | |
| 10. | Carlo Lawler | .4178 | 5709 | 2009 | |
| 11. | Darrell Behm * | .4174 | 5664 | 2009 | |
| 12. | Ralph Teachout | .4156 | 4941 | 2007 | |
| 13. | William Blackmon | .4099 | 5245 | 2008 | |
| 14. | Freddie Wiens * | .4081 | 8533 | 2013 | |
| 15. | Joshua Castelli | .4069 | 9693 | 2016 | |
| 16. | Daniel Berman | .4069 | 8602 | 2014 | |
| 17. | Antonio Ohl | .4052 | 12703 | 2024 | |
| 18. | Wilbur Bohan | .4033 | 4009 | 2006 | |
| 19. | Lemuel Jarvis | .4026 | 5726 | 2025 | |
| 20. | William Landa | .4026 | 6821 | 2025 | |
| 21. | Larry Goguen * | .4022 | 9823 | 2017 | |
| 22. | Jay Zullo | .4012 | 4858 | 2025 | |
| 23. | Richard Campanella | .3990 | 4247 | 2006 | |
| 24. | Ronald Goodall | .3986 | 5725 | 2025 | |
| 25. | Lawerence Spillers | .3974 | 8468 | 2025 | |
| 26. | James Rone | .3970 | 5847 | 2010 | |
| 27. | Sanford Alligood | .3967 | 4026 | 2025 | |
| 28. | Derrick Miller | .3951 | 6751 | 2025 | |
| 29. | Wilson Cleary | .3946 | 3535 | 2025 | |
| 30. | Dennis Diaz | .3943 | 9907 | 2024 | |
| 31. | Elvis Cianciolo * | .3936 | 10117 | 2015 | |
| 32. | David Washington | .3935 | 3462 | 2025 | |
| 33. | Arthur Shaeffer | .3928 | 9117 | 2024 | |
| 34. | Ronnie Marable | .3928 | 6777 | 2014 | |
| 35. | John Johnson * | .3917 | 11283 | 2021 | |
| 36. | William Guidi | .3915 | 7119 | 2021 | |
| 37. | Lewis Hubbell | .3914 | 5495 | 2025 | |
| 38. | William Lecroy | .3906 | 4151 | 2025 | |
| 39. | Todd Davis | .3905 | 7683 | 2025 | |
| 40. | Richard Pease | .3894 | 6383 | 2025 | |
| 41. | Robert Wiesner | .3893 | 6711 | 2025 | |
| 42. | David Pastor | .3887 | 3986 | 2024 | |
| 43. | Michael Tilman | .3877 | 6498 | 2010 | |
| 44. | Juan Hoops | .3874 | 4221 | 2007 | |
| 45. | Delbert Sheeran | .3861 | 6576 | 2025 | |
| 46. | Donny Room | .3857 | 5136 | 2025 | |
| 47. | Bill Cortina | .3857 | 5873 | 2025 | |
| 48. | Christopher Edie | .3856 | 5692 | 2008 | |
| 49. | Hector Martucci | .3854 | 5233 | 2025 | |
| 50. | Jose Vallejos | .3834 | 5690 | 2025 | |
| 51. | Thomas Heacock | .3822 | 8043 | 2023 | |
| 52. | George Driskell | .3817 | 6318 | 2025 | |
| 53. | Steven Ruf | .3812 | 8706 | 2016 | |
| 54. | Lewis Hileman | .3810 | 3874 | 2009 | |
| 55. | Albert Duran | .3784 | 3953 | 2025 | |
| 56. | Neville Pegg | .3774 | 3275 | 2025 | |
| 57. | William McDaniel | .3774 | 4668 | 2013 | |
| 58. | Ward Gillion | .3772 | 5075 | 2025 | |
| 59. | Charles Dorazio * | .3769 | 10384 | 2021 | |
| 60. | Brian Humble | .3766 | 10449 | 2025 | |
| 61. | Fred Janney | .3761 | 9261 | 2023 | |
| 62. | Kevin Dupuy | .3759 | 3088 | 2006 | |
| 63. | Perry Lujan | .3758 | 9513 | 2024 | |
| 64. | Brian Rice | .3757 | 5689 | 2025 | |
| 65. | Claud Guth | .3757 | 8347 | 2013 | |
| 66. | John Bodie | .3752 | 5075 | 2025 | |
| 67. | Lanny Valdez | .3752 | 6836 | 2012 | |
| 68. | Matthew Lawhorn | .3750 | 5978 | 2013 | |
| 69. | Karl Bauer | .3749 | 8862 | 2025 | |
| 70. | Jonah Fernandez | .3745 | 3540 | 2025 | |
| 71. | Angel McBride * | .3745 | 10121 | 2017 | |
| 72. | Ralph Willis | .3743 | 8863 | 2015 | |
| 73. | Gordon Casias | .3743 | 6285 | 2010 | |
| 74. | William Remy * | .3736 | 6688 | 2011 | |
| 75. | Roy Lamp | .3731 | 6429 | 2010 | |
| 76. | Guadalupe Hensler * | .3729 | 6576 | 2010 | |
| 77. | Joan Sprouse | .3729 | 9888 | 2025 | |
| 78. | Kevin Priestley | .3727 | 7975 | 2019 | |
| 79. | Pat Gordon | .3723 | 8326 | 2017 | |
| 80. | Walter Maziarz | .3721 | 7232 | 2011 | |
| 81. | Gregory McIntosh * | .3718 | 9548 | 2014 | |
| 82. | Phillip Brown | .3717 | 3107 | 2009 | |
| 83. | Steve Bettencourt | .3714 | 4593 | 2009 | |
| 84. | Ronald Padillo | .3714 | 5832 | 2010 | |
| 85. | Isidro Ehlers | .3710 | 5708 | 2009 | |
| 86. | Joe Roop | .3706 | 10349 | 2022 | |
| 87. | Amado Caputo | .3701 | 6233 | 2025 | |
| 88. | Vernon James | .3701 | 4196 | 2009 | |
| 89. | Matthew Avina | .3699 | 6458 | 2025 | |
| 90. | Eddy Highfill | .3699 | 4912 | 2025 | |
| 91. | Terrance Morales | .3696 | 3989 | 2007 | |
| 92. | Rodger Whisenant * | .3690 | 10679 | 2015 | |
| 93. | Tony Ruiz | .3689 | 6776 | 2025 | |
| 94. | Brian Buterbaugh | .3684 | 11661 | 2024 | |
| 95. | Guy McRee | .3681 | 4464 | 2025 | |
| 96. | Aisaburou Tohaku | .3678 | 6083 | 2025 | |
| 97. | Lewis McCracken | .3676 | 4114 | 2008 | |
| 98. | Ryan Drayton | .3675 | 9070 | 2025 | |
| 99. | Matthew Hammond | .3675 | 8999 | 2014 | |
| 100. | James Mcnutt | .3674 | 7887 | 2025 |
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