| Home | Players | Teams | Leagues | Managers | Leaderboards | Win Shares | Awards | Help | |
| First Basemen Career On-Base Pct Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | On-Base Pct | PA | Years | Single Season Leaderboard |
| 1. | Jimmie Davis * | .3900 | 3724 | 2000-2006 | |
| 2. | Hank Carruthers | .3881 | 5422 | 2020-2029 | |
| 3. | Thad Hambro | .3775 | 3759 | 2022-2029 | |
| 4. | Renaldo Loera | .3762 | 5922 | 2000-2009 | |
| 5. | Sidney Sedgwick | .3647 | 5808 | 2000-2010 | |
| 6. | Paul Sidgwick | .3642 | 6554 | 2019-2029 | |
| 7. | Felix Atkinson | .3621 | 3454 | 2000-2005 | |
| 8. | Donald Birnbaum | .3606 | 7083 | 2000-2012 | |
| 9. | Ray Festa | .3605 | 7541 | 2001-2016 | |
| 10. | Jarvis Holeman | .3597 | 8003 | 2007-2020 | |
| 11. | Antonio Herrera | .3595 | 8144 | 2000-2012 | |
| 12. | Hugo Grimm | .3591 | 4214 | 2000-2008 | |
| 13. | Jerry Rivers | .3589 | 7955 | 2015-2029 | |
| 14. | Richard Willie | .3556 | 6751 | 2000-2011 | |
| 15. | Roberto Echegaray | .3555 | 6273 | 2017-2028 | |
| 16. | Ed Abrams | .3543 | 8250 | 2017-2029 | |
| 17. | John Gleaves | .3541 | 10897 | 2009-2027 | |
| 18. | Felix Perez | .3540 | 5246 | 2021-2029 | |
| 19. | Harry Lewis | .3539 | 3049 | 2024-2029 | |
| 20. | Mohammed Cardenas | .3536 | 3593 | 2000-2007 | |
| 21. | Gino Vera | .3505 | 5828 | 2016-2029 | |
| 22. | Cassius Money | .3493 | 4750 | 2010-2022 | |
| 23. | Ron Brenton | .3489 | 7397 | 2000-2011 | |
| 24. | Ernie Lester | .3482 | 5507 | 2020-2029 | |
| 25. | Aragorn King * | .3468 | 8621 | 2003-2016 | |
| 26. | Howard Lovecraft | .3467 | 8548 | 2008-2022 | |
| 27. | Jason Wallin | .3464 | 7512 | 2007-2021 | |
| 28. | James Roselli | .3451 | 4394 | 2000-2009 | |
| 29. | Aaron Ontireros | .3411 | 3265 | 2024-2029 | |
| 30. | Robert Killian | .3407 | 6385 | 2018-2029 | |
| 31. | Jose Rojas | .3401 | 7174 | 2006-2020 | |
| 32. | Steve McLaughlin | .3397 | 8747 | 2006-2022 | |
| 33. | Gerardo Mauro | .3386 | 6311 | 2004-2014 | |
| 34. | Jacks Nito | .3377 | 7333 | 2010-2024 | |
| 35. | Nobukazu Takemura | .3375 | 10123 | 2003-2020 | |
| 36. | James Schlemmer | .3348 | 4942 | 2018-2027 | |
| 37. | Donald Williams | .3336 | 5525 | 2008-2021 | |
| 38. | Val Echols | .3304 | 5462 | 2005-2016 | |
| 39. | Tyler Utah | .3302 | 3233 | 2000-2004 | |
| 40. | Cole Watterson | .3291 | 5393 | 2020-2029 | |
| 41. | Carl Wesolowski | .3283 | 5169 | 2005-2020 | |
| 42. | John Swanson | .3270 | 3411 | 2004-2013 | |
| 43. | John Ransom | .3258 | 5480 | 2014-2023 | |
| 44. | Fred Bell | .3249 | 3130 | 2002-2010 | |
| 45. | Chet Rinehart | .3220 | 4064 | 2004-2016 | |
| 46. | Donnie Loftin | .3217 | 5680 | 2018-2029 | |
| 47. | Paco Andujar | .3214 | 4964 | 2009-2018 | |
| 48. | John Howard | .3213 | 4982 | 2005-2018 | |
| 49. | David Dawes | .3211 | 3654 | 2018-2029 | |
| 50. | Sabino Mocasque | .3186 | 3791 | 2021-2029 | |
| 51. | Bick Horizon | .3181 | 5642 | 2007-2018 | |
| 52. | Hal Rehm | .3178 | 10482 | 2005-2022 | |
| 53. | Luis Rodriguez | .3156 | 7708 | 2016-2029 | |
| 54. | Warren Fox | .3155 | 3326 | 2008-2022 | |
| 55. | William McCroskey | .3153 | 3554 | 2016-2025 | |
| 56. | Curtis Kulp | .3120 | 3461 | 2014-2027 | |
| 57. | Pedro Peņa | .3112 | 4807 | 2008-2022 | |
| 58. | Leon Brouwer | .3105 | 5919 | 2004-2015 | |
| 59. | Antonio Diego | .3099 | 3906 | 2021-2029 | |
| 60. | Jerry Isham | .3092 | 3390 | 2023-2029 | |
| 61. | Kyle Englert | .3092 | 3851 | 2004-2019 | |
| 62. | James Persons | .3090 | 3164 | 2000-2006 | |
| 63. | Eugenio Loaiza | .3077 | 3640 | 2017-2028 | |
| 64. | Mike King | .3043 | 7676 | 2013-2027 | |
| 65. | Albert Ortega | .3029 | 4956 | 2000-2009 | |
| 66. | Kenneth Herman | .3024 | 3987 | 2005-2015 | |
| 67. | Sammy Gillespie | .2997 | 3048 | 2012-2022 | |
| 68. | Ike Asimov | .2975 | 3964 | 2012-2023 | |
| 69. | Johnny Carmona | .2913 | 6157 | 2003-2015 | |
| 70. | Jamil Goods | .2894 | 3318 | 2007-2017 | |
| 71. | Ben Perez | .2817 | 3096 | 2000-2009 | |
| 72. | Winston Pearl | .2789 | 5401 | 2016-2027 | |
| 73. | Dean Chalmers | .2612 | 6133 | 2005-2017 |
| For questions or to report errors, please send us a note. |