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| Single-Season OPS Leaderboard | |
| * - Indicates Hall of Fame
+ - indicates hit-less at-bats added to meet 502PA requirement. |
| Rank | Player | OPS | PA | Year | Career Leaderboard |
| 1. | Freddy Aguinaldo | 1.2446 | 668 | 2023 | |
| 2. | Timothy Payne * | 1.2440 | 671 | 2023 | |
| 3. | Pedro Ibaņez * | 1.2405 | 682 | 2031 | |
| 4. | Juan Alfaro | 1.2147 | 607 | 2038 | |
| 5. | Inazo Takeo * | 1.2088 | 652 | 2032 | |
| 6. | Ryuichi Kojuro | 1.1742 | 647 | 2045 | |
| 7. | Terry Rivenburg | 1.1484 | 682 | 2044 | |
| 8. | Inazo Takeo * | 1.1444 | 706 | 2035 | |
| 9. | Bobby Bonds * | 1.1387 | 585 | 2031 | |
| 10. | Terry Rivenburg | 1.1320 | 648 | 2043 | |
| 11. | Ivan Ivanoff * | 1.1286 | 660 | 2025 | |
| 12. | Inazo Takeo * | 1.1275 | 610 | 2033 | |
| 13. | Ivan Ivanoff * | 1.1203 | 638 | 2023 | |
| 14. | Jose Villamil * | 1.1104 | 665 | 2031 | |
| 15. | Billy Boeing | 1.1066 | 679 | 2048 | |
| 16. | Bobby Bonds * | 1.1059 | 676 | 2030 | |
| 17. | Inazo Takeo * | 1.1052 | 657 | 2036 | |
| 18. | Ujifuji Motoki * | 1.1035 | 660 | 2025 | |
| 19. | Stephen Strozier | 1.1032 | 698 | 2030 | |
| 20. | Timothy Payne * | 1.1024 | 604 | 2026 | |
| 21. | Herbert Janicki | 1.1005 | 666 | 2024 | |
| 22. | Armando Zubiaga * | 1.1004 | 641 | 2027 | |
| 23. | Terry Rivenburg | 1.0978 | 623 | 2042 | |
| 24. | Theodore Farrelly | 1.0950 | 645 | 2040 | |
| 25. | Richard Resnick | 1.0937 | 569 | 2043 | |
| 26. | Dan Murphy | 1.0920 | 654 | 2023 | |
| 27. | Terry Rivenburg | 1.0900 | 560 | 2047 | |
| 28. | Inazo Takeo * | 1.0887 | 667 | 2034 | |
| 29. | Renato Lera | 1.0870 | 670 | 2048 | |
| 30. | Ryuichi Kojuro | 1.0856 | 686 | 2041 | |
| 31. | Bobby Bonds * | 1.0742 | 635 | 2027 | |
| 32. | Dan Hannan | 1.0737 | 667 | 2025 | |
| 33. | Timothy Payne * | 1.0718 | 685 | 2024 | |
| 34. | Pedro Ibaņez * | 1.0695 | 678 | 2030 | |
| 35. | George Suazo | 1.0678 | 635 | 2033 | |
| 36. | Ryuichi Kojuro | 1.0655 | 654 | 2037 | |
| 37. | Inazo Takeo * | 1.0627 | 646 | 2037 | |
| 38. | Timothy Payne * | 1.0598 | 570 | 2028 | |
| 39. | Alfonso Coria | 1.0592 | 648 | 2035 | |
| 40. | Ryuichi Kojuro | 1.0591 | 671 | 2038 | |
| 41. | Bigg Foote | 1.0591 | 518 | 2044 | |
| 42. | George Suazo | 1.0573 | 642 | 2034 | |
| 43. | Frank Potts * | 1.0573 | 581 | 2025 | |
| 44. | Theodore Farrelly | 1.0569 | 673 | 2033 | |
| 45. | John Feather * | 1.0554 | 619 | 2025 | |
| 46. | Terry Rivenburg | 1.0553 | 676 | 2046 | |
| 47. | Armando Zubiaga * | 1.0532 | 650 | 2030 | |
| 48. | Pedro Ibaņez * | 1.0526 | 678 | 2038 | |
| 49. | Joe Marx | 1.0491 | 673 | 2030 | |
| 50. | Arturo Marra | 1.0486 | 692 | 2048 | |
| 51. | Ryuichi Kojuro | 1.0452 | 666 | 2043 | |
| 52. | Bobby Bonds * | 1.0443 | 634 | 2026 | |
| 53. | Tevin Griffey * | 1.0438 | 649 | 2028 | |
| 54. | Dalcio Basabe * | 1.0421 | 659 | 2033 | |
| 55. | Theodore Farrelly | 1.0418 | 674 | 2034 | |
| 56. | Pedro Ibaņez * | 1.0416 | 567 | 2029 | |
| 57. | Daniel Strawberry | 1.0389 | 633 | 2024 | |
| 58. | Frank Potts * | 1.0385 | 622 | 2027 | |
| 59. | Daniel Strawberry | 1.0384 | 599 | 2023 | |
| 60. | Kagamitarou Kantaro | 1.0381 | 581 | 2026 | |
| 61. | George Suazo | 1.0377 | 662 | 2031 | |
| 62. | Arturo Marra | 1.0376 | 598 | 2046 | |
| 63. | Yoshitaka Kagehisa | 1.0372 | 651 | 2030 | |
| 64. | Ujifuji Motoki * | 1.0372 | 635 | 2027 | |
| 65. | Arturo Marra | 1.0351 | 656 | 2047 | |
| 66. | Ivan Ivanoff * | 1.0344 | 673 | 2024 | |
| 67. | Pedro Ibaņez * | 1.0342 | 629 | 2039 | |
| 68. | Ryuichi Kojuro | 1.0329 | 675 | 2036 | |
| 69. | Kevin Hernandez | 1.0322 | 551 | 2023 | |
| 70. | Pedro Ibaņez * | 1.0320 | 670 | 2035 | |
| 71. | Ivan Ivanoff * | 1.0311 | 618 | 2027 | |
| 72. | Renato Lera | 1.0310 | 659 | 2046 | |
| 73. | Tevin Griffey * | 1.0291 | 639 | 2030 | |
| 74. | Bernard Alsup | 1.0271 | 656 | 2038 | |
| 75. | Herbert Janicki | 1.0271 | 667 | 2027 | |
| 76. | Timothy Malone | 1.0260 | 560 | 2036 | |
| 77. | Bobby Bonds * | 1.0243 | 652 | 2028 | |
| 78. | Daniel Hobby | 1.0236 | 674 | 2041 | |
| 79. | Carlitos Ascensio | 1.0230 | 652 | 2031 | |
| 80. | Ujifuji Motoki * | 1.0225 | 678 | 2024 | |
| 81. | Dalcio Basabe * | 1.0221 | 660 | 2032 | |
| 82. | Timothy Payne * | 1.0221 | 623 | 2027 | |
| 83. | Armando Dejesus | 1.0219 | 661 | 2044 | |
| 84. | Stephen Strozier | 1.0218 | 678 | 2029 | |
| 85. | Frank Potts * | 1.0209 | 608 | 2028 | |
| 86. | Edward McGee | 1.0192 | 647 | 2029 | |
| 87. | Frank Potts * | 1.0178 | 569 | 2026 | |
| 88. | Herbert Janicki | 1.0175 | 662 | 2023 | |
| 89. | Billy Boeing | 1.0175 | 653 | 2046 | |
| 90. | Armando Dejesus | 1.0173 | 651 | 2047 | |
| 91. | Tevin Griffey * | 1.0159 | 633 | 2029 | |
| 92. | Renato Lera | 1.0149 | 667 | 2047 | |
| 93. | Ryuichi Kojuro | 1.0145 | 672 | 2046 | |
| 94. | Dalcio Basabe * | 1.0138 | 687 | 2030 | |
| 95. | Alfonso Coria | 1.0137 | 664 | 2039 | |
| 96. | Pedro Ibaņez * | 1.0131 | 658 | 2028 | |
| 97. | Walt Musial | 1.0129 | 675 | 2033 | |
| 98. | Herme Abad | 1.0128 | 671 | 2047 | |
| 99. | Yoshitaka Kagehisa | 1.0100 | 672 | 2028 | |
| 100. | Ujifuji Motoki * | 1.0100 | 623 | 2026 |
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