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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Ed Greer# | 1.4167 | 2021-2022 | |
| 2 | Mitch Lyon | 1.3815 | 2014-2014 | |
| 3 | Cecil Campbell | 1.3571 | 2018-2018 | |
| 4 | George Evans | 1.2147 | 2019-2019 | |
| 5 | Gerard Washington | 1.1912 | 2020-2022 | |
| 6 | Bo Bing# | 1.1817 | 2026-2026 | |
| 7 | Matt Fullerton | 1.1746 | 2017-2017 | |
| 8 | Gulloo Sandip# | 1.1704 | 2022-2022 | |
| 9 | Daniel Rodríguez | 1.1504 | 2013-2013 | |
| 10 | José Jaramillo | 1.1366 | 2021-2021 | |
| 11 | Doug White# | 1.1278 | 2020-2020 | |
| 12 | Mark Connor# | 1.1192 | 2019-2019 | |
| 13 | Adrian Brown | 1.1058 | 2016-2016 | |
| 14 | Juan Garza | 1.1002 | 2015-2016 | |
| 15 | Arama Huanu | 1.0905 | 2019-2019 | |
| 16 | Manuel Rivera# | 1.0882 | 2020-2020 | |
| 17 | Yoshino Okabe | 1.0848 | 2018-2018 | |
| 18 | Max Pyke | 1.0816 | 2020-2020 | |
| 19 | Joe Watson# | 1.0795 | 2019-2019 | |
| 20 | Joe Finley# | 1.0749 | 2025-2027 | |
| 21 | Jeremy Evans | 1.0663 | 2017-2017 | |
| 22 | Mark Smith | 1.0504 | 2013-2013 | |
| 23 | Oscar Compton# | 1.0276 | 2025-2026 | |
| 24 | Richard Dudley# | 1.0177 | 2017-2017 | |
| 25 | Nobukazu Ogura# | 1.0111 | 2023-2025 | |
| 26 | Cristián Rivera# | 1.0107 | 2019-2020 | |
| 27 | Michael Bennett# | 1.0084 | 2017-2021 | |
| 28 | Masamichi Fujita# | 1.0076 | 2024-2025 | |
| 29 | Michael Warren# | 1.0029 | 2017-2017 | |
| 30 | Mitsuoki Suzuki | 1.0000 | 2020-2020 | |
| 31 | William Harmon | .9994 | 2013-2021 | |
| 32 | William Cunningham# | .9975 | 2018-2018 | |
| 33 | Adam Hounsell# | .9968 | 2024-2026 | |
| 34 | Mokichi Kono# | .9960 | 2018-2025 | |
| 35 | Rubén Rosales | .9917 | 2023-2023 | |
| 36 | Takesi Takahashi | .9858 | 2016-2016 | |
| 37 | John Willis | .9794 | 2019-2022 | |
| 38 | Dave Guenette | .9709 | 2019-2021 | |
| 39 | Juan López# | .9702 | 2023-2024 | |
| 40 | Dominic Owens# | .9562 | 2019-2021 | |
| 41 | Masamichi Sasaki# | .9481 | 2026-2027 | |
| 42 | Phil Decker# | .9353 | 2022-2026 | |
| 43 | Douglas Dannattet# | .9304 | 2027-2027 | |
| 44 | Ramgopal Muddiah | .9269 | 2017-2021 | |
| 45 | Doug Manning | .9261 | 2016-2016 | |
| 46 | Vugar Mingrelia | .9200 | 2020-2020 | |
| 46 | Jorge Hernández | .9200 | 2025-2025 | |
| 48 | Francisco Sáenz | .9189 | 2014-2015 | |
| 49 | Juan Pacheco | .9148 | 2021-2022 | |
| 50 | Conor Borlase# | .9089 | 2024-2027 | |
| 51 | Dave Nelson# | .9080 | 2023-2024 | |
| 52 | Bobby McClughan | .9053 | 2020-2021 | |
| 53 | Henry King | .8818 | 2017-2017 | |
| 54 | Geoffrey Graham | .8768 | 2017-2017 | |
| 55 | Angelito Márquez# | .8720 | 2022-2022 | |
| 56 | Irving Bryant# | .8676 | 2026-2027 | |
| 57 | Monte Irvin# | .8641 | 2026-2026 | |
| 58 | Bill Wilcox# | .8626 | 2021-2022 | |
| 59 | Jim Wood# | .8622 | 2022-2026 | |
| 60 | Conceição Loff# | .8600 | 2025-2026 | |
| 61 | John Harrison# | .8591 | 2025-2025 | |
| 62 | Brendon Walsh | .8515 | 2019-2020 | |
| 63 | Xavier Chávez | .8512 | 2012-2012 | |
| 64 | Obiniana Balance# | .8509 | 2023-2024 | |
| 65 | Anderson Peterson# | .8505 | 2020-2026 | |
| 66 | Carlos Gamboa# | .8501 | 2022-2022 | |
| 67 | Carlos Durán# | .8481 | 2026-2027 | |
| 68 | Michael Cook | .8460 | 2023-2024 | |
| 69 | Darren Cunningham# | .8458 | 2021-2022 | |
| 69 | Keith Reese# | .8458 | 2025-2027 | |
| 71 | Juan Negrón# | .8435 | 2027-2027 | |
| 72 | Roosevelt Bond | .8420 | 2018-2018 | |
| 73 | Joe Calhoun# | .8297 | 2019-2024 | |
| 74 | Ji-hyun Kim# | .8295 | 2025-2027 | |
| 75 | Tsuramatsu Iijima | .8270 | 2016-2024 | |
| 76 | António Torres# | .8173 | 2021-2021 | |
| 77 | Ramón Guzmán | .8144 | 2013-2013 | |
| 78 | Dominique Lepage | .8109 | 2014-2015 | |
| 79 | Qian Thean# | .8095 | 2026-2026 | |
| 80 | Bruce Joyner | .8083 | 2016-2024 | |
| 81 | Luis Martínez | .8055 | 2024-2024 | |
| 82 | Eddy Carpentier# | .8038 | 2020-2020 | |
| 83 | Matt Wilkerson# | .7991 | 2023-2027 | |
| 84 | Blaine Turner# | .7984 | 2027-2027 | |
| 85 | Nick Jacobson | .7980 | 2019-2019 | |
| 86 | Takuji Hakui | .7943 | 2015-2020 | |
| 87 | Hidekazu Takeuchi# | .7876 | 2022-2024 | |
| 88 | José Pona# | .7866 | 2025-2025 | |
| 89 | Daniel Roberts | .7857 | 2017-2020 | |
| 90 | Henry Richardson | .7828 | 2014-2016 | |
| 91 | Jake Hunt# | .7759 | 2015-2018 | |
| 92 | Dave O'Callaghan | .7721 | 2023-2024 | |
| 93 | Hipakeiki Namaka | .7717 | 2021-2022 | |
| 94 | Vicente García# | .7708 | 2023-2023 | |
| 95 | Joseph Herman# | .7697 | 2020-2022 | |
| 96 | Pedro Valéncia# | .7609 | 2027-2027 | |
| 97 | Fernando Germán# | .7569 | 2021-2021 | |
| 98 | José Barajas | .7551 | 2018-2018 | |
| 99 | Víctor Hernández# | .7477 | 2026-2026 | |
| 100 | Bernardo Salazar# | .7473 | 2025-2026 |
