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| Single-Season Innings Pitched Leaderboard | |
| * - Indicates Hall of Fame |
| Rank | Player | Innings Pitched | IP | Year | Career Leaderboard |
| 1. | Ryan Canizales | 321.7 | 321.7 | 1950 | |
| 2. | Joseph Hale | 294.7 | 294.7 | 1950 | |
| 3. | Domingo Contreras | 288.3 | 288.3 | 1947 | |
| 4. | Lucien Pillar | 286.0 | 286.0 | 1950 | |
| 5. | Daniel Elliott | 285.7 | 285.7 | 1950 | |
| 6. | Tommie Guernsey | 283.7 | 283.7 | 1949 | |
| 7. | Robert Lerman | 282.7 | 282.7 | 1947 | |
| 8. | Stephen McMaster | 281.7 | 281.7 | 1948 | |
| 9. | Domingo Contreras | 281.0 | 281.0 | 1949 | |
| 10. | Jesse Nelson | 280.7 | 280.7 | 1949 | |
| 11. | Robert Lerman | 279.7 | 279.7 | 1949 | |
| 12. | Domingo Contreras | 278.3 | 278.3 | 1948 | |
| 13. | Craig Riemer | 277.3 | 277.3 | 1947 | |
| 14. | Tommie Guernsey | 276.3 | 276.3 | 1948 | |
| 15. | Joseph Hale | 276.0 | 276.0 | 1947 | |
| 16. | Gerald Sarno | 275.7 | 275.7 | 1950 | |
| 17. | Celso Ocejo | 274.3 | 274.3 | 1949 | |
| 18. | Stan Lugo | 274.0 | 274.0 | 1948 | |
| 19. | Carlos Pacheco | 273.7 | 273.7 | 1947 | |
| 20. | Abel Ceja | 273.3 | 273.3 | 1948 | |
| 21. | Corey Hill | 272.0 | 272.0 | 1950 | |
| Carlos Pacheco | 272.0 | 272.0 | 1950 | ||
| 23. | Joshua Cook | 271.3 | 271.3 | 1950 | |
| 24. | Stephen McMaster | 271.0 | 271.0 | 1949 | |
| 25. | James Hanselman | 268.7 | 268.7 | 1950 | |
| Robert Lerman | 268.7 | 268.7 | 1948 | ||
| 27. | Lucien Pillar | 268.0 | 268.0 | 1948 | |
| 28. | Dwight Roesch | 267.3 | 267.3 | 1948 | |
| 29. | Joseph Hale | 267.0 | 267.0 | 1948 | |
| Gerald Sarno | 267.0 | 267.0 | 1947 | ||
| 31. | Lucien Pillar | 265.7 | 265.7 | 1947 | |
| 32. | Joseph Hale | 265.3 | 265.3 | 1949 | |
| Kenny Whetzel | 265.3 | 265.3 | 1947 | ||
| 34. | Jacob Borne | 265.0 | 265.0 | 1948 | |
| 35. | Daniel Adams | 264.3 | 264.3 | 1947 | |
| Gerald Sarno | 264.3 | 264.3 | 1948 | ||
| 37. | Robert Lerman | 264.0 | 264.0 | 1950 | |
| 38. | James Hanselman | 263.3 | 263.3 | 1949 | |
| Daniel Elliott | 263.3 | 263.3 | 1949 | ||
| 40. | Miichirou Kotaro | 262.7 | 262.7 | 1949 | |
| Daniel Adams | 262.7 | 262.7 | 1948 | ||
| James Hanselman | 262.7 | 262.7 | 1948 | ||
| 43. | Lucien Pillar | 262.3 | 262.3 | 1949 | |
| Earle Olivier | 262.3 | 262.3 | 1948 | ||
| 45. | Justin Smith | 261.0 | 261.0 | 1950 | |
| Daniel Elliott | 261.0 | 261.0 | 1948 | ||
| 47. | Dwight Roesch | 260.3 | 260.3 | 1950 | |
| 48. | Roger Kirwan | 259.3 | 259.3 | 1947 | |
| 49. | Marvin Shope | 258.3 | 258.3 | 1947 | |
| Gary Smith | 258.3 | 258.3 | 1947 | ||
| 51. | Donald Walker | 258.0 | 258.0 | 1949 | |
| Joshua Cook | 258.0 | 258.0 | 1948 | ||
| 53. | Roger Kirwan | 257.7 | 257.7 | 1949 | |
| Dwight Roesch | 257.7 | 257.7 | 1949 | ||
| 55. | Stan Lugo | 257.0 | 257.0 | 1947 | |
| 56. | Boyce Coplin | 256.0 | 256.0 | 1947 | |
| 57. | Joshua Cook | 255.3 | 255.3 | 1947 | |
| 58. | Abel Ceja | 255.0 | 255.0 | 1947 | |
| 59. | Kendry Lizarraga | 254.7 | 254.7 | 1947 | |
| 60. | Kendry Lizarraga | 254.3 | 254.3 | 1948 | |
| 61. | Marvin Shope | 254.0 | 254.0 | 1950 | |
| 62. | Gary Smith | 253.7 | 253.7 | 1949 | |
| Chet Seiler | 253.7 | 253.7 | 1948 | ||
| 64. | Jarvis Inabinet | 253.0 | 253.0 | 1950 | |
| Roger Kirwan | 253.0 | 253.0 | 1950 | ||
| 66. | Albert Vogel | 252.3 | 252.3 | 1947 | |
| 67. | Michael Maker | 252.0 | 252.0 | 1949 | |
| Lavern Bessler | 252.0 | 252.0 | 1947 | ||
| 69. | Joseph Dierks | 251.7 | 251.7 | 1950 | |
| 70. | Charles Eddins | 251.3 | 251.3 | 1948 | |
| 71. | Virgil Rice | 250.0 | 250.0 | 1948 | |
| 72. | Miichirou Kotaro | 249.7 | 249.7 | 1950 | |
| 73. | Stephen McMaster | 249.3 | 249.3 | 1950 | |
| 74. | Marvin Shope | 249.0 | 249.0 | 1949 | |
| Paul Bravo | 249.0 | 249.0 | 1947 | ||
| 76. | Scott Cross | 248.7 | 248.7 | 1947 | |
| 77. | Donald Walker | 248.0 | 248.0 | 1950 | |
| Earle Olivier | 248.0 | 248.0 | 1947 | ||
| Donald Walker | 248.0 | 248.0 | 1947 | ||
| 80. | Scott Hornsby | 247.7 | 247.7 | 1950 | |
| Eric Brown | 247.7 | 247.7 | 1948 | ||
| Dwight Roesch | 247.7 | 247.7 | 1947 | ||
| 83. | Jacob Borne | 247.0 | 247.0 | 1947 | |
| Daniel Elliott | 247.0 | 247.0 | 1947 | ||
| 85. | Gerald Sarno | 246.7 | 246.7 | 1949 | |
| Marvin Shope | 246.7 | 246.7 | 1948 | ||
| Norman Fitzwater | 246.7 | 246.7 | 1947 | ||
| 88. | James Kline | 246.3 | 246.3 | 1950 | |
| James Bury | 246.3 | 246.3 | 1948 | ||
| James Nickerson | 246.3 | 246.3 | 1947 | ||
| 91. | Corey Hill | 246.0 | 246.0 | 1949 | |
| James Bury | 246.0 | 246.0 | 1947 | ||
| 93. | Joseph Frank | 245.3 | 245.3 | 1949 | |
| 94. | Donald Walker | 245.0 | 245.0 | 1948 | |
| 95. | Stan Lugo | 244.3 | 244.3 | 1949 | |
| Stephen McMaster | 244.3 | 244.3 | 1947 | ||
| 97. | Kendry Lizarraga | 244.0 | 244.0 | 1949 | |
| 98. | Kendry Lizarraga | 243.7 | 243.7 | 1950 | |
| Edward Pires | 243.7 | 243.7 | 1949 | ||
| Corey Hill | 243.7 | 243.7 | 1948 |
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