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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 | George Valentine | .4778 | 2017 | |
| 3 | Robbie Roach | .4762 | 2018 | |
| 4 | John Ennis# | .4735 | 2029 | |
| 5 | Bob Dickerson# | .4667 | 2020 | |
| 6 | Gonzalo López | .4629 | 2016 | |
| 7 | David Smith# | .4625 | 2020 | |
| 8 | John Ennis# | .4617 | 2028 | |
| 9 | Melvin Castro# | .4535 | 2021 | |
| 10 | Thom Wilcox | .4509 | 2024 | |
| 11 | Tamasaburo Kato# | .4496 | 2030 | |
| 12 | Noel Ballard# | .4483 | 2027 | |
| 13 | Kenny Webster# | .4465 | 2025 | |
| 14 | George Valentine | .4424 | 2016 | |
| 15 | EP Weston# | .4417 | 2028 | |
| 16 | Jorge Barrios# | .4402 | 2027 | |
| 17 | Jeff Walsh | .4398 | 2017 | |
| 18 | Jorge Barrios# | .4397 | 2025 | |
| 19 | James Murray | .4382 | 2016 | |
| 20 | David Smith# | .4378 | 2019 | |
| 21 | Roberto Escues# | .4361 | 2028 | |
| 22 | Ramiro Salazar | .4355 | 2019 | |
| 23 | Jesús Orozco# | .4351 | 2022 | |
| 24 | Edwin Church# | .4350 | 2022 | |
| 25 | Bryan Manning | .4336 | 2018 | |
| 26 | Nathan Santos | .4333 | 2017 | |
| 27 | Wesley Osborne | .4316 | 2015 | |
| 28 | Enrique Pérez | .4314 | 2017 | |
| 29 | Juan Rivas# | .4311 | 2027 | |
| 30 | Javier Sánchez# | .4304 | 2026 | |
| 31 | Luis Muńóz | .4303 | 2018 | |
| 32 | Jorge Barrios# | .4292 | 2026 | |
| 33 | Gonzalo López | .4290 | 2022 | |
| 34 | José Meléndez | .4286 | 2017 | |
| 35 | Ed Anderson | .4283 | 2020 | |
| 36 | Adrián Gómez# | .4282 | 2028 | |
| 37 | Wilfrid Savary | .4279 | 2015 | |
| 38 | Vance Cannon | .4275 | 2015 | |
| 39 | Ye Der# | .4272 | 2019 | |
| 40 | Brad Elmore | .4261 | 2022 | |
| 40 | Johnny Hernández | .4261 | 2022 | |
| 42 | Xavier Hernández# | .4248 | 2030 | |
| 43 | Keith Burnett | .4242 | 2017 | |
| 44 | Bryan Manning | .4238 | 2019 | |
| 45 | Francisco Sánchez# | .4236 | 2021 | |
| 46 | Adrián Gómez# | .4231 | 2029 | |
| 47 | Cliff Dixon | .4229 | 2020 | |
| 48 | Chad Armstrong | .4222 | 2026 | |
| 49 | Sake van Arem# | .4221 | 2028 | |
| 50 | David Smith# | .4216 | 2018 | |
| 51 | Arturo Hernández | .4214 | 2018 | |
| 52 | John Brewer# | .4213 | 2022 | |
| 53 | Melvin Castro# | .4212 | 2027 | |
| 54 | Jerry Harris | .4211 | 2018 | |
| 55 | Cristo Nieto | .4206 | 2016 | |
| 56 | Urs van Munster# | .4204 | 2030 | |
| 57 | Francisco Sánchez# | .4194 | 2020 | |
| 57 | Jesús Orozco# | .4194 | 2023 | |
| 59 | Juan González | .4188 | 2023 | |
| 60 | Andrés Ibarra* | .4186 | 2017 | |
| 61 | Félix López# | .4182 | 2027 | |
| 62 | Yehonatan Chazan# | .4180 | 2029 | |
| 63 | Todd Williams# | .4172 | 2022 | |
| 64 | Bob Dickerson# | .4170 | 2021 | |
| 65 | Glyn Bolasky# | .4157 | 2029 | |
| 66 | Akihiko Oike | .4138 | 2020 | |
| 67 | Jorge Barrios# | .4137 | 2028 | |
| 67 | Leonard O'Connor# | .4137 | 2019 | |
| 69 | Luis Rodríguez* | .4136 | 2017 | |
| 70 | Nathan Tanner# | .4135 | 2023 | |
| 71 | Sean Davis | .4133 | 2022 | |
| 71 | Sake van Arem# | .4133 | 2029 | |
| 73 | Júlio Morín | .4131 | 2018 | |
| 73 | Ray Sears | .4131 | 2023 | |
| 73 | Sake van Arem# | .4131 | 2025 | |
| 76 | Félix Pérez | .4130 | 2017 | |
| 77 | Gonzalo López | .4124 | 2020 | |
| 78 | Clay Rush# | .4118 | 2019 | |
| 79 | Chris Rice | .4114 | 2021 | |
| 80 | Jonathan Cook# | .4110 | 2022 | |
| 81 | Victor Adams# | .4108 | 2028 | |
| 82 | Todd Henry# | .4105 | 2030 | |
| 83 | Xavier Hernández# | .4092 | 2028 | |
| 84 | Joey Jones# | .4087 | 2019 | |
| 85 | Jimmy Massey | .4078 | 2015 | |
| 86 | Clay Rush# | .4077 | 2020 | |
| 86 | Motoshige Kitamura | .4077 | 2020 | |
| 88 | Alfredo Martínez# | .4068 | 2029 | |
| 89 | Juan Jaramillo | .4067 | 2015 | |
| 90 | Melvin Castro# | .4066 | 2020 | |
| 91 | Roberto Fierro# | .4064 | 2029 | |
| 92 | David Verhoeve | .4061 | 2023 | |
| 93 | John Brewer# | .4059 | 2021 | |
| 94 | David Edwards# | .4055 | 2020 | |
| 95 | Marc Talamante | .4052 | 2018 | |
| 96 | Luis Rodríguez* | .4050 | 2015 | |
| 97 | Raykom Mikeladze | .4048 | 2015 | |
| 98 | Hank Wilder# | .4045 | 2026 | |
| 99 | Jesús Orozco# | .4044 | 2024 | |
| 100 | Kenny Webster# | .4041 | 2024 |
