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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Virginia Rain | .3721 | 2042-2055 | |
| 2 | Claudio Chávez | .3512 | 2027-2041 | |
| 3 | Alfredo Velázquez | .3508 | 2030-2036 | |
| 4 | Ángel Zambrano# | .3495 | 2055-2062 | |
| 5 | Júlio Montoya | .3451 | 2033-2042 | |
| 6 | Eduardo Montoya | .3412 | 2017-2026 | |
| 7 | Chuck Pate | .3356 | 2023-2032 | |
| 8 | Alejandro Rodríguez | .3348 | 2036-2050 | |
| 9 | Doug Glover, Jr. | .3337 | 2034-2043 | |
| 10 | Dave Stover | .3304 | 2018-2023 | |
| 11 | Adam Riggs | .3301 | 2045-2059 | |
| 12 | Ricardo Guerra | .3297 | 2026-2040 | |
| 13 | António Sánchez | .3284 | 2015-2019 | |
| 14 | António Colomo | .3268 | 2027-2032 | |
| 15 | Xavier Álvarez | .3217 | 2031-2039 | |
| 16 | Alfredo Padilla | .3204 | 2037-2042 | |
| 17 | Thomas Davis | .3193 | 2017-2027 | |
| 18 | Brendan Kerndl | .3191 | 2034-2047 | |
| 19 | Don Hattie | .3168 | 2046-2054 | |
| 20 | António Méndez | .3151 | 2032-2043 | |
| 21 | Paul Brown | .3046 | 2046-2058 |
