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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Pancho Ruíz# | .5336 | 2020 | |
| 2 | Ron Peterson# | .5134 | 2020 | |
| 3 | Kenko Ueda# | .4322 | 2021 | |
| 4 | Gustavo Berrios# | .4207 | 2020 | |
| 5 | Gustavo Berrios# | .4143 | 2021 | |
| 6 | Jesús González# | .3789 | 2021 | |
| 7 | Mike Russell# | .3709 | 2020 | |
| 8 | Jorge Flores# | .3634 | 2020 | |
| 9 | José Salazar# | .2878 | 2021 |
