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| First Basemen Career Innings Played Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | Innings Played | IP | Years | Single Season Leaderboard |
| 1. | John Gleaves | 22015.6 | 22015.6 | 2009-2027 | |
| 2. | Hal Rehm | 21824.0 | 21824.0 | 2005-2022 | |
| 3. | Nobukazu Takemura | 21219.3 | 21219.3 | 2003-2020 | |
| 4. | Steve McLaughlin | 18131.0 | 18131.0 | 2006-2022 | |
| 5. | Aragorn King * | 17490.0 | 17490.0 | 2003-2016 | |
| 6. | Antonio Herrera | 16954.6 | 16954.6 | 2000-2012 | |
| 7. | Ed Abrams | 16631.3 | 16631.3 | 2017-2029 | |
| 8. | Howard Lovecraft | 16563.3 | 16563.3 | 2008-2022 | |
| 9. | Jerry Rivers | 16072.6 | 16072.6 | 2015-2029 | |
| 10. | Jarvis Holeman | 15612.3 | 15612.3 | 2007-2020 | |
| 11. | Jason Wallin | 15345.9 | 15345.9 | 2007-2021 | |
| 12. | Ray Festa | 14965.0 | 14965.0 | 2001-2016 | |
| 13. | Ron Brenton | 14645.0 | 14645.0 | 2000-2011 | |
| 14. | Jacks Nito | 14181.3 | 14181.3 | 2011-2024 | |
| 15. | Donald Birnbaum | 14161.6 | 14161.6 | 2000-2012 | |
| 16. | Richard Willie | 13700.0 | 13700.0 | 2000-2011 | |
| 17. | Paul Sidgwick | 12839.3 | 12839.3 | 2020-2029 | |
| 18. | Renaldo Loera | 11999.7 | 11999.7 | 2000-2009 | |
| 19. | Mike King | 11903.6 | 11903.6 | 2013-2027 | |
| 20. | Val Echols | 11677.9 | 11677.9 | 2005-2016 | |
| 21. | Robert Killian | 11553.6 | 11553.6 | 2018-2029 | |
| 22. | Jose Rojas | 11471.0 | 11471.0 | 2008-2020 | |
| 23. | Ernie Lester | 10976.6 | 10976.6 | 2020-2029 | |
| 24. | Hank Carruthers | 10884.7 | 10884.7 | 2020-2029 | |
| 25. | Albert Ortega | 10877.3 | 10877.3 | 2000-2009 | |
| 26. | Bick Horizon | 10440.0 | 10440.0 | 2006-2018 | |
| 27. | Cole Watterson | 10011.6 | 10011.6 | 2020-2029 | |
| 28. | John Ransom | 9973.0 | 9973.0 | 2014-2023 | |
| 29. | Donnie Loftin | 9509.6 | 9509.6 | 2018-2029 | |
| 30. | Sidney Sedgwick | 9497.6 | 9497.6 | 2000-2010 | |
| 31. | Cassius Money | 9276.6 | 9276.6 | 2010-2022 | |
| 32. | Pedro Peņa | 9250.3 | 9250.3 | 2009-2022 | |
| 33. | James Schlemmer | 9184.0 | 9184.0 | 2018-2027 | |
| 34. | James Roselli | 8860.3 | 8860.3 | 2000-2009 | |
| 35. | Chet Rinehart | 8522.0 | 8522.0 | 2004-2016 | |
| 36. | Winston Pearl | 8142.0 | 8142.0 | 2016-2027 | |
| 37. | Walter Vega | 8042.6 | 8042.6 | 2005-2015 | |
| 38. | Charles Vanwormer | 8031.0 | 8031.0 | 2003-2016 | |
| 39. | Hugo Grimm | 8027.3 | 8027.3 | 2000-2008 | |
| 40. | Leon Brouwer | 7987.6 | 7987.6 | 2004-2015 | |
| 41. | Denver Robinson | 7938.0 | 7938.0 | 2015-2026 | |
| 42. | Sabino Mocasque | 7725.7 | 7725.7 | 2021-2029 | |
| 43. | Carl Wesolowski | 7621.6 | 7621.6 | 2005-2020 | |
| 44. | Jimmie Davis * | 7522.0 | 7522.0 | 2000-2006 | |
| 45. | Kyle Englert | 7372.0 | 7372.0 | 2006-2019 | |
| 46. | Antonio Diego | 7269.0 | 7269.0 | 2021-2029 | |
| 47. | Johnny Carmona | 7250.3 | 7250.3 | 2003-2015 | |
| 48. | Mohammed Cardenas | 7250.0 | 7250.0 | 2000-2007 | |
| 49. | Luis Rodriguez | 6866.0 | 6866.0 | 2018-2029 | |
| 50. | Felix Atkinson | 6830.7 | 6830.7 | 2000-2005 | |
| 51. | Jacinto Leon | 6760.6 | 6760.6 | 2000-2010 | |
| 52. | Aaron Ontireros | 6693.7 | 6693.7 | 2024-2029 | |
| 53. | David Freels | 6675.3 | 6675.3 | 2005-2016 | |
| 54. | Curtis Kulp | 6672.3 | 6672.3 | 2014-2027 | |
| 55. | David Dawes | 6586.3 | 6586.3 | 2018-2029 | |
| 56. | James Persons | 6572.3 | 6572.3 | 2000-2006 | |
| 57. | Gerardo Mauro | 6566.0 | 6566.0 | 2004-2014 | |
| 58. | Tyler Utah | 6404.0 | 6404.0 | 2000-2004 | |
| 59. | Ben Perez | 6367.3 | 6367.3 | 2000-2009 | |
| 60. | Jamil Goods | 6356.6 | 6356.6 | 2007-2017 | |
| 61. | Dan Staub | 6306.0 | 6306.0 | 2009-2015 | |
| 62. | William McCroskey | 6145.3 | 6145.3 | 2016-2025 | |
| 63. | Fred Bell | 6081.6 | 6081.6 | 2002-2010 | |
| 64. | Austin Legend | 6024.3 | 6024.3 | 2024-2029 | |
| 65. | Chubby Arnette | 5960.0 | 5960.0 | 2024-2029 | |
| 66. | John Swanson | 5896.6 | 5896.6 | 2004-2013 | |
| 67. | Sammy Gillespie | 5737.3 | 5737.3 | 2012-2022 | |
| 68. | Harry Lewis | 5646.3 | 5646.3 | 2024-2029 | |
| 69. | Ike Asimov | 5641.7 | 5641.7 | 2012-2023 | |
| 70. | Ben Atencio | 5393.6 | 5393.6 | 2000-2006 | |
| 71. | Jeff Giles | 5298.0 | 5298.0 | 2025-2029 | |
| 72. | Thad Hambro | 5265.7 | 5265.7 | 2022-2029 | |
| 73. | Dean Chalmers | 5158.3 | 5158.3 | 2013-2017 | |
| 74. | Ronaldo Cardenas | 5142.3 | 5142.3 | 2000-2007 | |
| 75. | Christopher Babineau | 5139.0 | 5139.0 | 2019-2029 | |
| 76. | Mack Outlaw | 5130.7 | 5130.7 | 2025-2029 | |
| 77. | Felix Perez | 4762.3 | 4762.3 | 2023-2029 | |
| 78. | Salvador Pujals | 4747.7 | 4747.7 | 2026-2029 | |
| 79. | Gino Vera | 4740.0 | 4740.0 | 2017-2029 | |
| 80. | Isaac Coulter | 4526.0 | 4526.0 | 2000-2005 | |
| 81. | Jason Fick | 4470.7 | 4470.7 | 2014-2021 | |
| 82. | Leroy Augustine | 4412.7 | 4412.7 | 2003-2015 | |
| 83. | Mark Edgin | 4314.7 | 4314.7 | 2000-2003 | |
| 84. | Graham Brown | 4114.3 | 4114.3 | 2000-2003 | |
| 85. | Jeremy Vaz | 4079.3 | 4079.3 | 2012-2022 | |
| 86. | Terrance Minor | 3998.3 | 3998.3 | 2000-2002 | |
| 87. | John Mettler | 3924.3 | 3924.3 | 2000-2012 | |
| 88. | Antonio Fret | 3795.3 | 3795.3 | 2022-2029 | |
| 89. | David Occhipinti | 3794.7 | 3794.7 | 2024-2029 | |
| 90. | Richard Delamora | 3793.0 | 3793.0 | 2000-2003 | |
| 91. | Rey Moncayo * | 3728.0 | 3728.0 | 2002-2014 | |
| 92. | Elmo Miles | 3658.7 | 3658.7 | 2000-2006 | |
| 93. | Felix Melano | 3535.3 | 3535.3 | 2018-2029 | |
| 94. | Scott Davis | 3530.7 | 3530.7 | 2027-2029 | |
| 95. | Patrick Quincy | 3524.3 | 3524.3 | 2000-2005 | |
| 96. | Pat Galyon | 3479.3 | 3479.3 | 2005-2014 | |
| 97. | Benito Esqueda | 3474.0 | 3474.0 | 2000-2004 | |
| 98. | Nightmare Massengill | 3437.7 | 3437.7 | 2021-2029 | |
| 99. | Walter Bast | 3218.3 | 3218.3 | 2016-2025 | |
| 100. | Bernard Arevalo | 3183.0 | 3183.0 | 2000-2007 |
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