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| Single-Season OSLG Leaderboard | |
| * - Indicates Hall of Fame |
| Rank | Player | OSLG | IP | Year | Career Leaderboard |
| 1. | Stan Lugo | .2281 | 274.0 | 1948 | |
| 2. | Stan Lugo | .2511 | 257.0 | 1947 | |
| 3. | Stephen McMaster | .2786 | 281.7 | 1948 | |
| 4. | Robert Lerman | .2795 | 264.0 | 1950 | |
| 5. | Stan Lugo | .2904 | 244.3 | 1949 | |
| 6. | Joshua Cook | .2941 | 271.3 | 1950 | |
| 7. | Lucien Pillar | .2946 | 286.0 | 1950 | |
| 8. | Donald Walker | .3139 | 245.0 | 1948 | |
| 9. | Earle Olivier | .3149 | 248.0 | 1947 | |
| 10. | Joshua Cook | .3156 | 258.0 | 1948 | |
| 11. | Jarvis Inabinet | .3159 | 253.0 | 1950 | |
| 12. | Lucien Pillar | .3172 | 268.0 | 1948 | |
| 13. | Robert Lerman | .3175 | 279.7 | 1949 | |
| 14. | Stephen McMaster | .3195 | 271.0 | 1949 | |
| 15. | Michael Maker | .3202 | 252.0 | 1949 | |
| 16. | Robert Carreiro | .3226 | 179.0 | 1950 | |
| 17. | James Riordan | .3236 | 228.7 | 1949 | |
| 18. | Lucien Pillar | .3236 | 262.3 | 1949 | |
| 19. | James Nickerson | .3244 | 206.0 | 1948 | |
| 20. | Kendry Lizarraga | .3269 | 254.3 | 1948 | |
| 21. | Dwight Roesch | .3273 | 257.7 | 1949 | |
| 22. | Robert Lerman | .3273 | 282.7 | 1947 | |
| 23. | Roger Kirwan | .3274 | 173.7 | 1948 | |
| 24. | Joseph Hale | .3313 | 265.3 | 1949 | |
| 25. | Domingo Contreras | .3343 | 281.0 | 1949 | |
| 26. | Roger Kirwan | .3344 | 259.3 | 1947 | |
| 27. | Kendry Lizarraga | .3371 | 254.7 | 1947 | |
| 28. | Pelayo Torres | .3397 | 194.3 | 1950 | |
| Paul Bravo | .3397 | 200.7 | 1948 | ||
| 30. | Marvin Shope | .3402 | 246.7 | 1948 | |
| 31. | Robert Lerman | .3406 | 268.7 | 1948 | |
| 32. | Daniel Adams | .3406 | 262.7 | 1948 | |
| 33. | Mark Carrasquillo | .3409 | 232.0 | 1948 | |
| 34. | William Noriega | .3423 | 239.7 | 1950 | |
| 35. | Terry Lobdell | .3428 | 220.7 | 1950 | |
| 36. | Joshua Cook | .3441 | 255.3 | 1947 | |
| 37. | John Clontz | .3442 | 173.0 | 1949 | |
| 38. | Donald Walker | .3443 | 248.0 | 1950 | |
| 39. | Corey Hill | .3457 | 272.0 | 1950 | |
| 40. | Joseph Hale | .3460 | 267.0 | 1948 | |
| 41. | Daniel Elliott | .3462 | 261.0 | 1948 | |
| 42. | Andrew Tarpley | .3467 | 196.3 | 1950 | |
| 43. | Corey Hill | .3468 | 243.7 | 1948 | |
| 44. | Donald Walker | .3468 | 258.0 | 1949 | |
| 45. | Carlos Pacheco | .3489 | 272.0 | 1950 | |
| 46. | Jose Rao | .3492 | 192.7 | 1950 | |
| 47. | Kendry Lizarraga | .3495 | 243.7 | 1950 | |
| 48. | Lucien Pillar | .3506 | 265.7 | 1947 | |
| 49. | Ryan Canizales | .3507 | 321.7 | 1950 | |
| 50. | Marvin Shope | .3513 | 258.3 | 1947 | |
| 51. | Dwight Roesch | .3515 | 267.3 | 1948 | |
| 52. | Robert Carreiro | .3515 | 212.0 | 1949 | |
| 53. | Joseph Hale | .3525 | 294.7 | 1950 | |
| 54. | Gerald Sarno | .3550 | 275.7 | 1950 | |
| 55. | Gary Smith | .3550 | 253.7 | 1949 | |
| 56. | Tommie Guernsey | .3569 | 276.3 | 1948 | |
| 57. | Joseph Eley | .3574 | 206.7 | 1949 | |
| 58. | Michael Edwards | .3575 | 187.3 | 1950 | |
| 59. | Virgil Rice | .3576 | 250.0 | 1948 | |
| 60. | Joel Lopez | .3585 | 164.0 | 1949 | |
| 61. | Casey Stutzman | .3588 | 190.7 | 1947 | |
| 62. | Albert Vogel | .3605 | 252.3 | 1947 | |
| 63. | Edward Rivero | .3610 | 241.7 | 1950 | |
| 64. | Dwight Roesch | .3613 | 247.7 | 1947 | |
| 65. | Daniel Adams | .3621 | 264.3 | 1947 | |
| 66. | Eric Brown | .3639 | 247.7 | 1948 | |
| 67. | Gerald Sarno | .3651 | 264.3 | 1948 | |
| 68. | Virgil Rice | .3652 | 205.7 | 1950 | |
| 69. | Robert Evatt | .3654 | 231.0 | 1950 | |
| 70. | Corey Hill | .3657 | 246.0 | 1949 | |
| 71. | Roderick Horner | .3666 | 232.3 | 1947 | |
| 72. | Jon Eaton | .3667 | 215.7 | 1947 | |
| 73. | Gerald Sarno | .3672 | 267.0 | 1947 | |
| 74. | Bud Bartley | .3675 | 193.3 | 1947 | |
| 75. | Charles Eddins | .3678 | 251.3 | 1948 | |
| 76. | Jarvis Inabinet | .3679 | 234.3 | 1949 | |
| 77. | James Hanselman | .3687 | 268.7 | 1950 | |
| 78. | Jesse Nelson | .3689 | 217.7 | 1948 | |
| 79. | James Riordan | .3696 | 212.3 | 1947 | |
| 80. | James Ingles | .3696 | 176.0 | 1950 | |
| 81. | Earle Olivier | .3697 | 235.7 | 1949 | |
| 82. | Carlos Pacheco | .3703 | 273.7 | 1947 | |
| 83. | James Bury | .3710 | 246.3 | 1948 | |
| 84. | Roger Kirwan | .3715 | 253.0 | 1950 | |
| 85. | Miichirou Kotaro | .3717 | 249.7 | 1950 | |
| 86. | Craig Riemer | .3729 | 277.3 | 1947 | |
| 87. | Richard Cunningham | .3739 | 229.7 | 1948 | |
| 88. | Chet Seiler | .3741 | 253.7 | 1948 | |
| 89. | Daniel Dull | .3742 | 168.3 | 1949 | |
| 90. | James Hanselman | .3754 | 262.7 | 1948 | |
| 91. | Joseph Dierks | .3756 | 251.7 | 1950 | |
| 92. | Charles Eddins | .3759 | 205.7 | 1950 | |
| 93. | Domingo Contreras | .3760 | 288.3 | 1947 | |
| 94. | Roderick Horner | .3761 | 184.3 | 1948 | |
| 95. | Marvin Shope | .3765 | 249.0 | 1949 | |
| 96. | Joshua Cook | .3765 | 176.7 | 1949 | |
| 97. | James Hanselman | .3766 | 243.3 | 1947 | |
| 98. | Joseph Hale | .3766 | 276.0 | 1947 | |
| 99. | Edward Plaisance | .3774 | 186.7 | 1950 | |
| 100. | Stephen McMaster | .3782 | 249.3 | 1950 |
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