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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Jim Thompson | .5476 | 2018-2020 | |
| 2 | Robert Boucher | .5278 | 2015-2021 | |
| 3 | Rocky Nichols# | .5238 | 2033-2033 | |
| 4 | Jesús Vásquez | .5185 | 2031-2038 | |
| 5 | Ron Taylor | .5122 | 2016-2022 | |
| 6 | Lorenzo Castanieda# | .5085 | 2024-2024 | |
| 7 | Oliver Douglas | .5082 | 2010-2022 | |
| 8 | Kiril Nijenboer | .5000 | 2015-2015 | |
| 8 | Ryo Takahashi# | .5000 | 2034-2034 | |
| 10 | Rod Johnson | .4912 | 2012-2013 | |
| 11 | António Fernández# | .4878 | 2038-2042 | |
| 11 | Cristóbal Rodríguez# | .4878 | 2039-2040 | |
| 13 | Zhao-dao Lew# | .4835 | 2034-2034 | |
| 14 | Raúl Moreno | .4792 | 2033-2034 | |
| 15 | Jarrod Wright | .4789 | 2010-2011 | |
| 16 | Kaoru Morimoto | .4773 | 2021-2031 | |
| 17 | Jorge Mojica | .4754 | 2015-2022 | |
| 17 | Jeff Nichols | .4754 | 2014-2025 | |
| 19 | Jeff Carroll | .4750 | 2013-2014 | |
| 20 | Jake Francis# | .4737 | 2041-2042 | |
| 21 | Corey Thompson# | .4706 | 2038-2040 | |
| 22 | Orlando Escamilla | .4667 | 2007-2011 | |
| 23 | Nori Ozaki# | .4583 | 2033-2034 | |
| 23 | Harlan Wright | .4583 | 2013-2019 | |
| 25 | Orinosuke Kato | .4545 | 2020-2020 | |
| 26 | Enrique Suárez | .4533 | 2011-2017 | |
| 27 | Greg Ferguson | .4528 | 2021-2032 | |
| 28 | Maresuke Kobayashi# | .4524 | 2040-2041 | |
| 29 | António Cortéz# | .4516 | 2037-2038 | |
| 30 | Sergio Prieto | .4507 | 2023-2026 | |
| 31 | Mike Rose# | .4500 | 2023-2042 | |
| 32 | Brandon Wilson | .4468 | 2022-2024 | |
| 33 | Esteban Solís | .4444 | 2021-2022 | |
| 34 | Tiburcio Penela | .4429 | 2029-2029 | |
| 35 | Christian Madden | .4426 | 2011-2020 | |
| 36 | Wilton Lewis | .4400 | 2031-2038 | |
| 36 | Jorge López | .4400 | 2027-2029 | |
| 38 | Brandon Johnson | .4375 | 2018-2020 | |
| 39 | Cliff Mitchell | .4364 | 2022-2026 | |
| 40 | Orlando Rúbio | .4318 | 2027-2028 | |
| 41 | Bruce Lawson# | .4286 | 2035-2035 | |
| 42 | Anthony Gamble | .4268 | 2030-2038 | |
| 43 | Yasuo Mori | .4262 | 2033-2038 | |
| 44 | José Cintrón# | .4247 | 2040-2042 | |
| 45 | Bartolo Mora# | .4245 | 2023-2024 | |
| 46 | Greg Moorer# | .4242 | 2041-2041 | |
| 47 | José Ríos# | .4231 | 2033-2034 | |
| 48 | Torvald Bouwman# | .4222 | 2036-2042 | |
| 48 | Francisco López | .4222 | 2014-2019 | |
| 48 | Tadasuke Suzuki | .4222 | 2026-2028 | |
| 51 | Yosuke Morimoto# | .4198 | 2029-2029 | |
| 52 | Yoshi Sakai | .4186 | 2032-2041 | |
| 53 | Sherwood Alldritt | .4167 | 2020-2032 | |
| 53 | Shojiro Kotara | .4167 | 2020-2037 | |
| 53 | Yukinaga Nakagawa | .4167 | 2032-2040 | |
| 56 | Christian Ramey | .4154 | 2010-2011 | |
| 57 | Kyuso Miura | .4151 | 2011-2014 | |
| 57 | Elton Peyto# | .4151 | 2036-2039 | |
| 59 | Yin-ti Hou# | .4146 | 2034-2042 | |
| 59 | Júlio Olivares | .4146 | 2014-2015 | |
| 61 | Kelsey van Wingerden | .4143 | 2026-2028 | |
| 62 | Powell Lawrence | .4130 | 2015-2018 | |
| 62 | Salvador Ruíz | .4130 | 2009-2020 | |
| 64 | Rick Boykin | .4118 | 2014-2016 | |
| 64 | Edward Brown | .4118 | 2018-2020 | |
| 66 | Luis Adame# | .4107 | 2041-2041 | |
| 67 | Lonnie Dixon | .4098 | 2017-2033 | |
| 68 | Nick Harris | .4091 | 2017-2019 | |
| 69 | Stewart Abbott | .4074 | 2023-2028 | |
| 69 | Donald Eldridge | .4074 | 2015-2022 | |
| 71 | Al Murdoch | .4068 | 2013-2027 | |
| 72 | Jesús Flores | .4048 | 2020-2022 | |
| 72 | Shi-ping Joo | .4048 | 2008-2023 | |
| 72 | Shinzo Kakuta# | .4048 | 2038-2040 | |
| 72 | Sergio Vallejo | .4048 | 2010-2011 | |
| 76 | António Figueroa# | .4038 | 2024-2040 | |
| 77 | Marvin Schoe# | .4034 | 2033-2034 | |
| 78 | Bob Heller | .4032 | 2024-2025 | |
| 78 | Norm Leseberg# | .4032 | 2040-2042 | |
| 80 | Miguel Batses# | .4026 | 2035-2037 | |
| 81 | Andrew Cannon# | .4024 | 2039-2041 | |
| 82 | Pol Knowles# | .4000 | 2038-2041 | |
| 82 | David Mann | .4000 | 2016-2026 | |
| 82 | Kao-kan Wu# | .4000 | 2035-2041 | |
| 85 | Roberto Gutiérrez# | .3953 | 2034-2034 | |
| 85 | Bartolo Trujillo | .3953 | 2027-2035 | |
| 87 | Francisco Lucador# | .3934 | 2029-2030 | |
| 88 | Dominic Culpepper# | .3929 | 2033-2033 | |
| 89 | Dan Howard | .3922 | 2011-2012 | |
| 90 | Etienne Breedveld# | .3913 | 2041-2042 | |
| 90 | Boyd Locke | .3913 | 2017-2022 | |
| 90 | Tommy McKnight | .3913 | 2027-2037 | |
| 90 | Mario Sánchez | .3913 | 2014-2014 | |
| 94 | Hisashi Takeuchi# | .3908 | 2040-2041 | |
| 95 | Alfredo Torres# | .3906 | 2023-2042 | |
| 96 | Josh Wilkerson | .3905 | 2012-2022 | |
| 97 | Corbin Hickman | .3902 | 2012-2012 | |
| 97 | Mark Hunt | .3902 | 2007-2009 | |
| 99 | Peter Alexander# | .3900 | 2030-2041 | |
| 100 | Eiichi Abe | .3889 | 2020-2021 |
