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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Noel Ballard* | .4823 | 2026 | |
| 2 | Ron Bernard | .4787 | 2032 | |
| 3 | George Valentine | .4778 | 2017 | |
| 4 | Robbie Roach | .4762 | 2018 | |
| 5 | Oasiz Wiesblatt# | .4758 | 2044 | |
| 6 | John Ennis | .4735 | 2029 | |
| 7 | Jonas van Claveren# | .4719 | 2041 | |
| 8 | Je-myung Yu# | .4706 | 2035 | |
| 9 | Bob Dickerson | .4667 | 2020 | |
| 10 | Scott Kerin | .4646 | 2043 | |
| 11 | Gonzalo López* | .4629 | 2016 | |
| 12 | David Smith* | .4625 | 2020 | |
| 13 | John Ennis | .4617 | 2028 | |
| 14 | Scott Kerin | .4606 | 2037 | |
| 15 | Scott Kerin | .4604 | 2040 | |
| 16 | Ron Bernard | .4556 | 2033 | |
| 17 | Je-myung Yu# | .4553 | 2037 | |
| 18 | Melvin Castro* | .4535 | 2021 | |
| 19 | Jonas van Claveren# | .4511 | 2036 | |
| 20 | Thom Wilcox* | .4509 | 2024 | |
| 21 | Oasiz Wiesblatt# | .4506 | 2046 | |
| 22 | Tamasaburo Kato* | .4496 | 2030 | |
| 23 | Noel Ballard* | .4483 | 2027 | |
| 24 | Kenny Webster | .4465 | 2025 | |
| 25 | Yu-zeng Si | .4459 | 2032 | |
| 26 | Harry Cornelis | .4442 | 2040 | |
| 27 | George Valentine | .4424 | 2016 | |
| 28 | EP Weston | .4417 | 2028 | |
| 29 | Bill Butler | .4403 | 2040 | |
| 30 | Jorge Barrios | .4402 | 2027 | |
| 31 | Jeff Walsh | .4398 | 2017 | |
| 32 | Jorge Barrios | .4397 | 2025 | |
| 33 | Gilberto Juárez | .4384 | 2033 | |
| 34 | James Murray | .4382 | 2016 | |
| 35 | David Smith* | .4378 | 2019 | |
| 36 | Roberto Escues | .4361 | 2028 | |
| 37 | Edgar Baeza | .4359 | 2033 | |
| 38 | Ramiro Salazar | .4355 | 2019 | |
| 39 | Oasiz Wiesblatt# | .4353 | 2041 | |
| 40 | Jesús Orozco | .4351 | 2022 | |
| 41 | Seb Blanch# | .4350 | 2046 | |
| 41 | Edwin Church | .4350 | 2022 | |
| 43 | Tom Bleasdale# | .4340 | 2047 | |
| 44 | Bryan Manning | .4336 | 2018 | |
| 45 | Juan Santángel# | .4335 | 2047 | |
| 46 | Nathan Santos | .4333 | 2017 | |
| 46 | António Mendoza | .4333 | 2031 | |
| 48 | Wesley Osborne | .4316 | 2015 | |
| 49 | Enrique Pérez* | .4314 | 2017 | |
| 50 | Juan Rivas | .4311 | 2027 | |
| 51 | Javier Sánchez* | .4304 | 2026 | |
| 52 | Luis Muñóz | .4303 | 2018 | |
| 53 | Edgar Baeza | .4298 | 2034 | |
| 54 | Mario Ramos* | .4293 | 2033 | |
| 54 | Matt Dunlap# | .4293 | 2043 | |
| 56 | Jorge Barrios | .4292 | 2026 | |
| 57 | Gonzalo López* | .4290 | 2022 | |
| 58 | José Meléndez | .4286 | 2017 | |
| 58 | Tim Stinson | .4286 | 2035 | |
| 60 | Ed Anderson | .4283 | 2020 | |
| 60 | Tadayoshi Watanabe | .4283 | 2035 | |
| 60 | Je-myung Yu# | .4283 | 2036 | |
| 63 | Adrián Gómez | .4282 | 2028 | |
| 64 | Wilfrid Savary | .4279 | 2015 | |
| 64 | Colton Pennington# | .4279 | 2044 | |
| 66 | Yehonatan Chazan | .4276 | 2033 | |
| 67 | Vance Cannon | .4275 | 2015 | |
| 68 | Ye Der | .4272 | 2019 | |
| 69 | Johnny Hernández | .4261 | 2022 | |
| 69 | Brad Elmore | .4261 | 2022 | |
| 71 | Tadayoshi Watanabe | .4260 | 2036 | |
| 72 | Russell Hamilton# | .4255 | 2045 | |
| 73 | Jesús Morales | .4251 | 2035 | |
| 74 | Chan-ho Shinn# | .4250 | 2044 | |
| 75 | Xavier Hernández | .4248 | 2030 | |
| 76 | Qing-nian Zexian# | .4242 | 2040 | |
| 76 | Keith Burnett | .4242 | 2017 | |
| 78 | Marcus Shill | .4238 | 2038 | |
| 78 | Bryan Manning | .4238 | 2019 | |
| 80 | Francisco Sánchez | .4236 | 2021 | |
| 81 | Adrián Gómez | .4231 | 2029 | |
| 81 | Ed Mellor# | .4231 | 2037 | |
| 83 | Cliff Dixon | .4229 | 2020 | |
| 84 | Oasiz Wiesblatt# | .4226 | 2042 | |
| 85 | Chad Armstrong* | .4222 | 2026 | |
| 86 | Sake van Arem* | .4221 | 2028 | |
| 87 | Philip Visscher# | .4220 | 2046 | |
| 87 | Keaton Kringlen# | .4220 | 2043 | |
| 89 | Hsiao-lou Rui# | .4218 | 2048 | |
| 90 | David Smith* | .4216 | 2018 | |
| 90 | Yehonatan Chazan | .4216 | 2034 | |
| 92 | Arturo Hernández | .4214 | 2018 | |
| 93 | John Brewer | .4213 | 2022 | |
| 94 | Melvin Castro* | .4212 | 2027 | |
| 95 | Jerry Harris | .4211 | 2018 | |
| 96 | Hsiao-lou Rui# | .4207 | 2049 | |
| 97 | Cristo Nieto | .4206 | 2016 | |
| 98 | Urs van Munster | .4204 | 2030 | |
| 99 | Philip Todd# | .4200 | 2045 | |
| 100 | Francisco Sánchez | .4194 | 2020 |
