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| Single-Season On-Base Pct Leaderboard | |
| * - Indicates Hall of Fame |
| Rank | Player | On-Base Pct | PA | Year | Career Leaderboard |
| 1. | Jose Brisco | .5016 | 616 | 2002 | |
| 2. | William Reedy * | .4964 | 691 | 2001 | |
| 3. | William Reedy * | .4949 | 691 | 2002 | |
| 4. | Barton Emrich * | .4939 | 656 | 2002 | |
| 5. | Darrell Behm * | .4892 | 787 | 2002 | |
| 6. | Andrew Stafford | .4841 | 816 | 2002 | |
| 7. | Joseph Lowry * | .4824 | 709 | 2001 | |
| 8. | William Reedy * | .4784 | 742 | 2003 | |
| 9. | Paul Pina * | .4784 | 765 | 2001 | |
| 10. | Paul Pina * | .4747 | 750 | 2002 | |
| 11. | Ronald Goodall | .4744 | 742 | 2021 | |
| 12. | Daniel Berman | .4736 | 682 | 2001 | |
| 13. | Wally Sutcliffe | .4736 | 645 | 2024 | |
| 14. | Barton Emrich * | .4715 | 738 | 2001 | |
| 15. | Burt Brooke | .4688 | 750 | 2001 | |
| 16. | Jeff Kelley | .4681 | 690 | 2001 | |
| 17. | Daniel Berman | .4662 | 744 | 2003 | |
| 18. | Ralph Teachout | .4638 | 800 | 2004 | |
| 19. | Joseph Lowry * | .4623 | 755 | 2003 | |
| 20. | Joseph Lowry * | .4612 | 774 | 2004 | |
| 21. | Wallace Beauchesne | .4592 | 724 | 2019 | |
| 22. | Paul Pina * | .4589 | 717 | 2008 | |
| 23. | Ronald Nickell | .4582 | 598 | 2002 | |
| 24. | Freddie Wiens * | .4579 | 784 | 2002 | |
| 25. | Benjamin Gilliam | .4575 | 671 | 2025 | |
| 26. | Arthur Shaeffer | .4570 | 593 | 2024 | |
| 27. | Andrew Stafford | .4552 | 681 | 2003 | |
| 28. | Carlo Lawler | .4544 | 703 | 2003 | |
| 29. | Joshua Castelli | .4540 | 533 | 2009 | |
| 30. | Paul Pina * | .4539 | 749 | 2004 | |
| 31. | Wilbur Bohan | .4532 | 673 | 2001 | |
| 32. | Joseph Lowry * | .4532 | 737 | 2009 | |
| 33. | William Reedy * | .4531 | 746 | 2004 | |
| 34. | William Reedy * | .4527 | 729 | 2005 | |
| 35. | Jose Brisco | .4526 | 794 | 2004 | |
| 36. | Ronnie Marable | .4518 | 623 | 2001 | |
| 37. | Odis Welsh | .4515 | 568 | 2001 | |
| 38. | Burt Brooke | .4507 | 801 | 2002 | |
| 39. | Kevin Pettaway | .4507 | 758 | 2002 | |
| 40. | Darrell Behm * | .4505 | 728 | 2005 | |
| 41. | Antonio Ohl | .4502 | 733 | 2010 | |
| 42. | Guadalupe Hensler * | .4498 | 618 | 2001 | |
| 43. | Joseph Lowry * | .4494 | 741 | 2008 | |
| 44. | Ralph Willis | .4493 | 808 | 2004 | |
| 45. | Ralph Teachout | .4492 | 708 | 2001 | |
| 46. | Anton Stevens | .4491 | 696 | 2001 | |
| 47. | Paul Pina * | .4482 | 676 | 2006 | |
| 48. | Daniel Berman | .4481 | 723 | 2005 | |
| 49. | Jose Brisco | .4478 | 731 | 2003 | |
| 50. | Ronnie Marable | .4476 | 630 | 2002 | |
| 51. | Wallace Beauchesne | .4473 | 740 | 2022 | |
| 52. | Ralph Teachout | .4472 | 721 | 2003 | |
| 53. | Barton Emrich * | .4472 | 738 | 2004 | |
| 54. | Burt Brooke | .4468 | 649 | 2003 | |
| 55. | Paul Pina * | .4455 | 707 | 2007 | |
| 56. | Paul Pina * | .4455 | 633 | 2009 | |
| 57. | Antonio Ohl | .4453 | 750 | 2017 | |
| 58. | Robert Scurlock | .4451 | 502 | 2001 | |
| 59. | Ronnie Marable | .4444 | 532 | 2004 | |
| 60. | Joshua Castelli | .4442 | 557 | 2010 | |
| 61. | Joshua Castelli | .4442 | 496 | 2007 | |
| Carlo Lawler | .4442 | 493 | 2001 | ||
| 63. | Jose Coppage | .4440 | 750 | 2002 | |
| 64. | Bill Cortina | .4440 | 696 | 2023 | |
| 65. | William Remy * | .4437 | 746 | 2001 | |
| 66. | Daniel Berman | .4434 | 715 | 2002 | |
| 67. | William Guidi | .4432 | 695 | 2019 | |
| 68. | Rodger Whisenant * | .4431 | 668 | 2001 | |
| 69. | John Johnson * | .4429 | 727 | 2010 | |
| 70. | John Bodie | .4429 | 718 | 2021 | |
| 71. | Tommy Lemus | .4423 | 533 | 2001 | |
| 72. | Michael Cadwell | .4422 | 701 | 2001 | |
| 73. | William Reedy * | .4411 | 721 | 2007 | |
| 74. | Joseph Lowry * | .4409 | 762 | 2002 | |
| 75. | Arthur Shaeffer | .4408 | 549 | 2018 | |
| 76. | William Remy * | .4405 | 741 | 2002 | |
| 77. | James Rone | .4402 | 703 | 2001 | |
| 78. | Joseph Lowry * | .4400 | 750 | 2007 | |
| Freddie Wiens * | .4400 | 750 | 2004 | ||
| 80. | William Landa | .4399 | 766 | 2022 | |
| 81. | Terrance Morales | .4390 | 590 | 2001 | |
| 82. | Paul Pina * | .4386 | 725 | 2003 | |
| 83. | Derrick Miller | .4385 | 723 | 2022 | |
| 84. | Joan Cross | .4383 | 756 | 2001 | |
| 85. | Antonio Ohl | .4383 | 737 | 2011 | |
| 86. | Darrell Behm * | .4379 | 596 | 2004 | |
| 87. | James Burns | .4376 | 683 | 2001 | |
| 88. | Antonio Ohl | .4373 | 734 | 2009 | |
| 89. | Lawerence Spillers | .4370 | 691 | 2023 | |
| 90. | Joshua Castelli | .4370 | 714 | 2004 | |
| 91. | Harry Mayer * | .4369 | 650 | 2001 | |
| 92. | Daniel Berman | .4367 | 758 | 2006 | |
| 93. | Jonathan Vila | .4366 | 662 | 2001 | |
| 94. | Lewis McCracken | .4365 | 692 | 2004 | |
| 95. | Rodger Whisenant * | .4364 | 732 | 2002 | |
| 96. | Elvis Cianciolo * | .4363 | 764 | 2004 | |
| 97. | Victor Park | .4363 | 708 | 2001 | |
| 98. | Lewis Hubbell | .4362 | 786 | 2024 | |
| 99. | William Reedy * | .4360 | 727 | 2010 | |
| 100. | Guadalupe Hensler * | .4354 | 674 | 2002 |
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