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| Single-Season Innings Pitched Leaderboard | |
| * - Indicates Hall of Fame |
| Rank | Player | Innings Pitched | IP | Year | Career Leaderboard |
| 1. | Aaron Bacon * | 336.3 | 336.3 | 2005 | |
| 2. | Aaron Bacon * | 331.0 | 331.0 | 2004 | |
| 3. | Hugh Hoots | 329.3 | 329.3 | 2008 | |
| 4. | Mark Torrence | 325.7 | 325.7 | 2008 | |
| 5. | Mark Torrence | 322.7 | 322.7 | 2005 | |
| 6. | Samson Steele * | 315.3 | 315.3 | 2003 | |
| 7. | Dennis Wright * | 315.0 | 315.0 | 2007 | |
| 8. | Mark Torrence | 312.3 | 312.3 | 2009 | |
| 9. | Kevin Smith | 309.0 | 309.0 | 2029 | |
| 10. | Mark Torrence | 308.0 | 308.0 | 2010 | |
| 11. | James Yim * | 304.0 | 304.0 | 2007 | |
| 12. | Thomas Showers * | 302.3 | 302.3 | 2005 | |
| 13. | Robert Slack | 302.0 | 302.0 | 2008 | |
| Thomas Showers * | 302.0 | 302.0 | 2003 | ||
| 15. | Kelvin Palen | 301.7 | 301.7 | 2007 | |
| 16. | Hugh Hoots | 300.3 | 300.3 | 2006 | |
| 17. | Dennis Morelock * | 300.0 | 300.0 | 2010 | |
| Randall Spates | 300.0 | 300.0 | 2007 | ||
| Thomas Showers * | 300.0 | 300.0 | 2004 | ||
| Thomas Showers * | 300.0 | 300.0 | 2002 | ||
| 21. | Richard San Juan | 299.7 | 299.7 | 2029 | |
| Roderigo Pequero | 299.7 | 299.7 | 2024 | ||
| 23. | Aaron Bacon * | 299.3 | 299.3 | 2003 | |
| 24. | Hugh Hoots | 298.3 | 298.3 | 2007 | |
| 25. | Kevin Smith | 298.0 | 298.0 | 2028 | |
| 26. | James Yim * | 297.7 | 297.7 | 2009 | |
| 27. | Ryan Turner * | 296.7 | 296.7 | 2006 | |
| Samson Steele * | 296.7 | 296.7 | 2001 | ||
| 29. | Roderigo Pequero | 295.7 | 295.7 | 2021 | |
| 30. | Matthew Bedard | 294.3 | 294.3 | 2006 | |
| 31. | Randall Spates | 293.7 | 293.7 | 2010 | |
| 32. | George Stoehr | 293.3 | 293.3 | 2007 | |
| 33. | Osvaldo Pedraza | 292.7 | 292.7 | 2009 | |
| 34. | Chad Schmidt | 292.3 | 292.3 | 2029 | |
| 35. | Robert Seaborn | 292.0 | 292.0 | 2005 | |
| 36. | James Yim * | 291.7 | 291.7 | 2008 | |
| Dmitrij Mitskevich | 291.7 | 291.7 | 2004 | ||
| 38. | Richard Hirsh | 291.0 | 291.0 | 2007 | |
| Kelvin Palen | 291.0 | 291.0 | 2005 | ||
| 40. | Robert Seaborn | 290.7 | 290.7 | 2003 | |
| 41. | Charlie Hester | 290.0 | 290.0 | 2021 | |
| 42. | Dennis Morelock * | 289.3 | 289.3 | 2011 | |
| Jeeves Vanhooten | 289.3 | 289.3 | 2007 | ||
| 44. | Scott Bartell | 289.0 | 289.0 | 2009 | |
| Ramon Quintana | 289.0 | 289.0 | 2004 | ||
| 46. | Aaron Bacon * | 288.3 | 288.3 | 2007 | |
| 47. | Jeffrey Cargo | 288.0 | 288.0 | 2002 | |
| 48. | Anthony McCulloch | 287.3 | 287.3 | 2003 | |
| 49. | Donte Dasilva | 287.0 | 287.0 | 2008 | |
| Gregory Hart | 287.0 | 287.0 | 2005 | ||
| Dmitrij Mitskevich | 287.0 | 287.0 | 2005 | ||
| Ryan Turner * | 287.0 | 287.0 | 2004 | ||
| 53. | Carlos Horizon | 286.7 | 286.7 | 2027 | |
| 54. | Dennis Morelock * | 286.3 | 286.3 | 2014 | |
| 55. | Dennis Wright * | 286.0 | 286.0 | 2008 | |
| 56. | Albert Olmos | 285.7 | 285.7 | 2004 | |
| 57. | Geoff Stagner | 285.0 | 285.0 | 2014 | |
| Ryan Turner * | 285.0 | 285.0 | 2009 | ||
| Kelvin Palen | 285.0 | 285.0 | 2004 | ||
| 60. | Anthony McCulloch | 284.7 | 284.7 | 2005 | |
| 61. | Malik Meng | 284.0 | 284.0 | 2002 | |
| Kelvin Palen | 284.0 | 284.0 | 2002 | ||
| 63. | Ryan Turner * | 283.7 | 283.7 | 2005 | |
| John Shultis | 283.7 | 283.7 | 2004 | ||
| Steven Williams * | 283.7 | 283.7 | 2003 | ||
| Dennis Wright * | 283.7 | 283.7 | 2002 | ||
| 67. | Jeeves Vanhooten | 283.3 | 283.3 | 2009 | |
| 68. | Clarence McNatt * | 283.3 | 283.3 | 2008 | |
| Dennis Morelock * | 283.3 | 283.3 | 2005 | ||
| 70. | Matthew Bedard | 282.3 | 282.3 | 2009 | |
| 71. | Edgardo Castillo * | 281.7 | 281.7 | 2004 | |
| 72. | Tobias Escobar | 281.3 | 281.3 | 2009 | |
| 73. | Blaine Titsworth | 281.0 | 281.0 | 2008 | |
| Roger Morrison | 281.0 | 281.0 | 2007 | ||
| 75. | Chad Schmidt | 280.7 | 280.7 | 2028 | |
| 76. | David Echegaray | 280.3 | 280.3 | 2013 | |
| 77. | Paul Hall | 280.3 | 280.3 | 2022 | |
| Tobias Escobar | 280.3 | 280.3 | 2012 | ||
| 79. | Charlie Hester | 280.0 | 280.0 | 2019 | |
| David Echegaray | 280.0 | 280.0 | 2015 | ||
| Kelly Giuliani | 280.0 | 280.0 | 2003 | ||
| 82. | Richard Hirsh | 279.7 | 279.7 | 2008 | |
| 83. | Scott Bartell | 279.3 | 279.3 | 2008 | |
| Anthony McCulloch | 279.3 | 279.3 | 2004 | ||
| 85. | Paul Hall | 279.0 | 279.0 | 2021 | |
| David Echegaray | 279.0 | 279.0 | 2007 | ||
| Thomas Showers * | 279.0 | 279.0 | 2001 | ||
| 88. | Roderigo Pequero | 278.7 | 278.7 | 2022 | |
| Malik Meng | 278.7 | 278.7 | 2005 | ||
| Aaron Bacon * | 278.7 | 278.7 | 2002 | ||
| Kevin Smith | 278.7 | 278.7 | 2027 | ||
| 92. | Osvaldo Pedraza | 278.3 | 278.3 | 2007 | |
| Steven Williams * | 278.3 | 278.3 | 2005 | ||
| 94. | Dennis Morelock * | 277.7 | 277.7 | 2009 | |
| Gene Foxworth | 277.7 | 277.7 | 2005 | ||
| 96. | Jeffrey Cargo | 277.3 | 277.3 | 2010 | |
| David Scoggin | 277.3 | 277.3 | 2002 | ||
| 98. | Donte Dasilva | 277.0 | 277.0 | 2009 | |
| Osvaldo Pedraza | 277.0 | 277.0 | 2006 | ||
| 100. | Kevin Smith | 276.7 | 276.7 | 2026 |
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