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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Toshitsugu Sakamoto# | .5929 | 2020 | |
| 2 | David Gómez# | .5028 | 2021 | |
| 3 | José Alonso# | .4855 | 2021 | |
| 4 | Randy Daugherty# | .4823 | 2024 | |
| 5 | Keith Spear | .4736 | 2021 | |
| 6 | Todd Hill# | .4569 | 2023 | |
| 7 | Virgil Eberle# | .4490 | 2022 | |
| 8 | Pedro Pérez# | .4483 | 2024 | |
| 9 | Stewart Ralston# | .4241 | 2024 | |
| 10 | Marshall Attwood# | .4200 | 2023 | |
| 11 | Kyle Dempsey# | .4051 | 2020 | |
| 12 | Leonard James# | .4005 | 2022 | |
| 13 | Jesús Pérez | .3836 | 2022 | |
| 14 | Stephen Blair# | .3803 | 2025 | |
| 15 | Valentín Guzmán# | .3785 | 2024 | |
| 16 | Sergio Cortéz# | .3743 | 2024 | |
| 17 | Ray Merrill# | .3648 | 2022 | |
| 18 | Roy Williams# | .3647 | 2023 | |
| 19 | Matt Hartnett# | .3631 | 2021 | |
| 20 | Carlos Rodríguez | .3611 | 2021 | |
| 21 | Arturo Romero# | .3448 | 2025 | |
| 22 | David Rivas# | .3350 | 2024 | |
| 23 | Johnny Foster# | .3344 | 2020 | |
| 24 | Roberto Ríos# | .3324 | 2023 | |
| 25 | Derek Blair# | .3141 | 2023 |
