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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Juan Valdéz | .4276 | 2021 | |
| 2 | Jake Shelton# | .4197 | 2022 | |
| 3 | Salvador Trevino# | .4106 | 2026 | |
| 4 | Jim Harris# | .4098 | 2023 | |
| 5 | Carlos Carranza | .3901 | 2021 | |
| 6 | Matt Hartnett# | .3872 | 2022 | |
| 7 | Aurelio Aurillo# | .3868 | 2024 | |
| 8 | Jim Harris# | .3844 | 2022 | |
| 9 | Héctor Ruíz# | .3827 | 2023 | |
| 10 | Jason Ruffin# | .3721 | 2024 | |
| 11 | Daniel Molina | .3688 | 2020 | |
| 12 | Alfredo García# | .3684 | 2026 | |
| 13 | Matt Hartnett# | .3676 | 2025 | |
| 14 | Bill Becker | .3613 | 2024 | |
| 15 | Cristo Ramírez# | .3555 | 2023 | |
| 16 | Álex Estrada# | .3542 | 2025 | |
| 17 | Rufo Flores# | .3535 | 2023 | |
| 18 | Cristo Ramírez# | .3531 | 2024 | |
| 18 | Matt Hartnett# | .3531 | 2023 | |
| 20 | Adam Hennessey | .3511 | 2020 | |
| 21 | Johnny Foster | .3482 | 2023 | |
| 22 | Bill Burgess | .3434 | 2024 | |
| 23 | Mike Greene# | .3402 | 2025 | |
| 24 | Bryce Reilly# | .3394 | 2026 | |
| 25 | Miguel Uribe# | .3376 | 2026 | |
| 26 | António Ramos | .3352 | 2021 | |
| 27 | Roberto Ríos# | .3312 | 2022 | |
| 28 | Álex Estrada# | .3304 | 2024 | |
| 29 | Leonard James# | .3276 | 2024 | |
| 30 | Roberto Maestas# | .3246 | 2025 | |
| 31 | Luis Vicenteno# | .3189 | 2026 | |
| 32 | Chae-hyeong Kim | .3178 | 2022 | |
| 33 | Barry Martínez | .3158 | 2021 | |
| 34 | Sergio Cortéz# | .3065 | 2023 | |
| 35 | Augusto Rocha# | .3059 | 2025 | |
| 36 | Ernesto Sánchez# | .3013 | 2026 | |
| 37 | Bernardo Cruz# | .2950 | 2021 | |
| 38 | Steve Duncan# | .2845 | 2026 |
