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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Sixto Álvarez | .6800 | 2024 | |
| 2 | Pedro Moreno | .6190 | 2015 | |
| 3 | Noel Ballard | .6087 | 2017 | |
| 3 | Ron Bascombe | .6087 | 2018 | |
| 5 | Melvin Castro | .6053 | 2026 | |
| 6 | Terumoto Kurihara | .6000 | 2030 | |
| 7 | Mario Castillo# | .5714 | 2030 | |
| 8 | Juan Sánchez | .5667 | 2017 | |
| 9 | Roberto Salazar# | .5652 | 2020 | |
| 9 | Billy Dotson# | .5652 | 2034 | |
| 11 | Jonathan Cook | .5600 | 2028 | |
| 12 | Melvin Castro | .5574 | 2030 | |
| 13 | Mal Bussard | .5556 | 2018 | |
| 13 | Jorge Barrios | .5556 | 2033 | |
| 15 | José Rodríguez | .5526 | 2018 | |
| 16 | Obidiah Lewis# | .5507 | 2035 | |
| 17 | Ed Anderson | .5500 | 2020 | |
| 18 | Craig Woods# | .5484 | 2036 | |
| 19 | John Ennis# | .5455 | 2034 | |
| 19 | Ye Der | .5455 | 2018 | |
| 19 | Michael Greene* | .5455 | 2017 | |
| 22 | Eddie Flynn | .5405 | 2026 | |
| 23 | Kanko Umaba# | .5385 | 2035 | |
| 24 | Lawrence Bell | .5357 | 2018 | |
| 25 | Noel Ballard | .5312 | 2026 | |
| 26 | Johnny Hernández | .5238 | 2021 | |
| 26 | José Álvarez | .5238 | 2017 | |
| 26 | Cooper Lowe# | .5238 | 2038 | |
| 26 | Tomás Gonzáles | .5238 | 2019 | |
| 26 | Dave Yates | .5238 | 2031 | |
| 26 | Kumanosuke Abe | .5238 | 2031 | |
| 26 | Jorge Barrios | .5238 | 2025 | |
| 26 | Michael Greene* | .5238 | 2016 | |
| 34 | Robbie Roach | .5217 | 2017 | |
| 34 | Michael Neely | .5217 | 2029 | |
| 34 | Leonardo López | .5217 | 2017 | |
| 37 | Brian O'Brian | .5200 | 2017 | |
| 38 | Roberto Rodríguez | .5185 | 2016 | |
| 38 | Craig Morgan# | .5185 | 2034 | |
| 40 | David Smith | .5172 | 2025 | |
| 41 | Ron Bernard# | .5062 | 2032 | |
| 42 | Joey Coco# | .5000 | 2034 | |
| 42 | John Aston | .5000 | 2024 | |
| 42 | Kameron Guangorena# | .5000 | 2035 | |
| 42 | Jorge Mojica | .5000 | 2023 | |
| 42 | Wilbert Carter | .5000 | 2029 | |
| 42 | Luis Muńóz | .5000 | 2018 | |
| 42 | José Peńa | .5000 | 2018 | |
| 42 | Pancho García | .5000 | 2018 | |
| 42 | Harry Fuller | .5000 | 2018 | |
| 42 | Ijsbrand Erkelens | .5000 | 2034 | |
| 42 | Count Dante# | .5000 | 2024 | |
| 42 | César Durán | .5000 | 2020 | |
| 42 | Palaie Gaoteote# | .5000 | 2036 | |
| 42 | Carlos Rodríguez | .5000 | 2025 | |
| 42 | Victor Adams | .5000 | 2024 | |
| 42 | Matthieu Servergnini | .5000 | 2017 | |
| 42 | Brett Callison# | .5000 | 2030 | |
| 42 | Bill Taylor | .5000 | 2022 | |
| 42 | Brad Elmore | .5000 | 2023 | |
| 42 | Dong-joon Ch'oe | .5000 | 2020 | |
| 42 | Wook-jin Pae | .5000 | 2015 | |
| 63 | Bryan Manning | .4878 | 2018 | |
| 64 | Arnold Giroux# | .4872 | 2033 | |
| 65 | António Mendoza# | .4857 | 2031 | |
| 66 | José Lozano | .4848 | 2020 | |
| 67 | Arturo Guzmán | .4839 | 2017 | |
| 68 | José Valéncia# | .4833 | 2031 | |
| 69 | Wilbur Davis# | .4828 | 2030 | |
| 69 | Arturo Rodríguez | .4828 | 2030 | |
| 69 | Wilfrid Savary | .4828 | 2020 | |
| 72 | Melvin Castro | .4824 | 2021 | |
| 73 | Kenzaburo Hori | .4815 | 2024 | |
| 73 | José Rodríguez | .4815 | 2017 | |
| 75 | Ramiro Salazar | .4808 | 2017 | |
| 76 | Félix Pérez | .4805 | 2021 | |
| 77 | Ray Sears* | .4800 | 2018 | |
| 77 | Kenny Webster | .4800 | 2024 | |
| 79 | Keith Burnett | .4792 | 2021 | |
| 80 | Miguel Gazivoda | .4783 | 2031 | |
| 80 | Arturo Rodríguez | .4783 | 2034 | |
| 80 | Álex Burgos | .4783 | 2025 | |
| 80 | Jeff Solís# | .4783 | 2037 | |
| 80 | George Valentine | .4783 | 2017 | |
| 80 | Mark Melton | .4783 | 2023 | |
| 86 | Clay Rush | .4773 | 2019 | |
| 86 | Jon Osterman# | .4773 | 2034 | |
| 88 | José Meléndez | .4762 | 2024 | |
| 88 | Do-hyung Nam | .4762 | 2016 | |
| 88 | Mike Gardner | .4762 | 2023 | |
| 88 | Juan Jose Ayala# | .4762 | 2036 | |
| 88 | Kenzaburo Hori | .4762 | 2022 | |
| 88 | Vernon Caw | .4762 | 2023 | |
| 88 | Kenzaburo Hori | .4762 | 2023 | |
| 88 | Júlio Gruzmán | .4762 | 2017 | |
| 96 | Ray Sears* | .4737 | 2022 | |
| 96 | Scott Kerin# | .4737 | 2034 | |
| 98 | Pedro Willis | .4722 | 2017 | |
| 99 | Tamasaburo Kato | .4717 | 2030 | |
| 100 | Iván Vega# | .4706 | 2026 |
