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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 | John Ennis# | .4735 | 2029 | |
| 6 | Je-myung Yu# | .4706 | 2035 | |
| 7 | Bob Dickerson# | .4667 | 2020 | |
| 8 | Gonzalo López | .4629 | 2016 | |
| 9 | David Smith | .4625 | 2020 | |
| 10 | John Ennis# | .4617 | 2028 | |
| 11 | Ron Bernard# | .4556 | 2033 | |
| 12 | Melvin Castro | .4535 | 2021 | |
| 13 | Thom Wilcox* | .4509 | 2024 | |
| 14 | Tamasaburo Kato# | .4496 | 2030 | |
| 15 | Noel Ballard | .4483 | 2027 | |
| 16 | Kenny Webster# | .4465 | 2025 | |
| 17 | Yu-zeng Si# | .4459 | 2032 | |
| 18 | George Valentine | .4424 | 2016 | |
| 19 | EP Weston# | .4417 | 2028 | |
| 20 | Jorge Barrios# | .4402 | 2027 | |
| 21 | Jeff Walsh | .4398 | 2017 | |
| 22 | Jorge Barrios# | .4397 | 2025 | |
| 23 | Gilberto Juárez# | .4384 | 2033 | |
| 24 | James Murray | .4382 | 2016 | |
| 25 | David Smith | .4378 | 2019 | |
| 26 | Roberto Escues | .4361 | 2028 | |
| 27 | Edgar Baeza# | .4359 | 2033 | |
| 28 | Ramiro Salazar | .4355 | 2019 | |
| 29 | Jesús Orozco | .4351 | 2022 | |
| 30 | Edwin Church# | .4350 | 2022 | |
| 31 | Bryan Manning | .4336 | 2018 | |
| 32 | Nathan Santos | .4333 | 2017 | |
| 32 | António Mendoza# | .4333 | 2031 | |
| 34 | Wesley Osborne | .4316 | 2015 | |
| 35 | Enrique Pérez* | .4314 | 2017 | |
| 36 | Juan Rivas | .4311 | 2027 | |
| 37 | Javier Sánchez# | .4304 | 2026 | |
| 38 | Luis Muńóz | .4303 | 2018 | |
| 39 | Edgar Baeza# | .4298 | 2034 | |
| 40 | Mario Ramos# | .4293 | 2033 | |
| 41 | Jorge Barrios# | .4292 | 2026 | |
| 42 | Gonzalo López | .4290 | 2022 | |
| 43 | José Meléndez | .4286 | 2017 | |
| 43 | Tim Stinson# | .4286 | 2035 | |
| 45 | Ed Anderson | .4283 | 2020 | |
| 45 | Tadayoshi Watanabe# | .4283 | 2035 | |
| 47 | Adrián Gómez# | .4282 | 2028 | |
| 48 | Wilfrid Savary | .4279 | 2015 | |
| 49 | Yehonatan Chazan# | .4276 | 2033 | |
| 50 | Vance Cannon | .4275 | 2015 | |
| 51 | Ye Der | .4272 | 2019 | |
| 52 | Brad Elmore | .4261 | 2022 | |
| 52 | Johnny Hernández | .4261 | 2022 | |
| 54 | Jesús Morales# | .4251 | 2035 | |
| 55 | Xavier Hernández# | .4248 | 2030 | |
| 56 | Keith Burnett | .4242 | 2017 | |
| 57 | Bryan Manning | .4238 | 2019 | |
| 58 | Francisco Sánchez | .4236 | 2021 | |
| 59 | Adrián Gómez# | .4231 | 2029 | |
| 60 | Cliff Dixon | .4229 | 2020 | |
| 61 | Chad Armstrong* | .4222 | 2026 | |
| 62 | Sake van Arem# | .4221 | 2028 | |
| 63 | David Smith | .4216 | 2018 | |
| 63 | Yehonatan Chazan# | .4216 | 2034 | |
| 65 | Arturo Hernández | .4214 | 2018 | |
| 66 | John Brewer | .4213 | 2022 | |
| 67 | Melvin Castro | .4212 | 2027 | |
| 68 | Jerry Harris | .4211 | 2018 | |
| 69 | Cristo Nieto | .4206 | 2016 | |
| 70 | Urs van Munster# | .4204 | 2030 | |
| 71 | Francisco Sánchez | .4194 | 2020 | |
| 71 | Jesús Orozco | .4194 | 2023 | |
| 73 | Juan González | .4188 | 2023 | |
| 74 | Andrés Ibarra | .4186 | 2017 | |
| 75 | Félix López# | .4182 | 2027 | |
| 76 | Yehonatan Chazan# | .4180 | 2029 | |
| 77 | Todd Williams | .4172 | 2022 | |
| 78 | Bob Dickerson# | .4170 | 2021 | |
| 79 | Obidiah Lewis# | .4169 | 2035 | |
| 80 | Glyn Bolasky# | .4157 | 2029 | |
| 81 | Akihiko Oike | .4138 | 2020 | |
| 82 | Jorge Barrios# | .4137 | 2028 | |
| 82 | Leonard O'Connor | .4137 | 2019 | |
| 84 | Luis Rodríguez | .4136 | 2017 | |
| 85 | Nathan Tanner# | .4135 | 2023 | |
| 86 | Sean Davis | .4133 | 2022 | |
| 86 | Sake van Arem# | .4133 | 2029 | |
| 88 | Júlio Morín | .4131 | 2018 | |
| 88 | Ray Sears* | .4131 | 2023 | |
| 88 | Sake van Arem# | .4131 | 2025 | |
| 91 | Félix Pérez | .4130 | 2017 | |
| 92 | Gonzalo López | .4124 | 2020 | |
| 93 | Clay Rush | .4118 | 2019 | |
| 94 | Chris Rice | .4114 | 2021 | |
| 94 | Hugh Hill# | .4114 | 2035 | |
| 96 | Jonathan Cook | .4110 | 2022 | |
| 97 | Mike Strickland# | .4108 | 2035 | |
| 97 | Yehonatan Chazan# | .4108 | 2035 | |
| 97 | Victor Adams# | .4108 | 2028 | |
| 100 | Todd Henry | .4105 | 2030 |
