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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Carroll Kline# | .5514 | 2020 | |
| 2 | Terry Conley# | .5291 | 2022 | |
| 3 | Eddie Ménard# | .5030 | 2024 | |
| 4 | Ángel Aguilar# | .4733 | 2023 | |
| 5 | Manny Valentín# | .4451 | 2023 | |
| 6 | Terry Conley# | .4406 | 2021 | |
| 7 | Mike Peterson# | .4366 | 2023 | |
| 8 | Arturo Ballina# | .4325 | 2023 | |
| 9 | Caleb Lee# | .4128 | 2020 | |
| 10 | Dave Orchard# | .4119 | 2020 | |
| 11 | José Ramírez | .3966 | 2022 | |
| 12 | Jorge Díaz# | .3963 | 2021 | |
| 13 | Shohei Kiyomizu# | .3947 | 2023 | |
| 14 | Alfonso Enríquez# | .3946 | 2021 | |
| 15 | Mike Peterson# | .3939 | 2022 | |
| 16 | Charles Mathes# | .3754 | 2020 | |
| 17 | Pedro Pérez# | .3519 | 2022 | |
| 18 | Rafael Delgado# | .3363 | 2023 | |
| 19 | Randy Tucker# | .3343 | 2022 | |
| 20 | Jack Burton# | .3333 | 2022 | |
| 21 | António Montés# | .3171 | 2021 | |
| 22 | Esteban Garza# | .3107 | 2021 | |
| 23 | Rafael Delgado# | .3084 | 2024 | |
| 24 | Wilson Castillo# | .3026 | 2024 | |
| 25 | Gustavo Varela# | .2931 | 2021 | |
| 26 | Young-hwan Hyon# | .2927 | 2024 | |
| 27 | Ron Bunch# | .2889 | 2022 | |
| 28 | Javier Martínez# | .2650 | 2020 | |
| 29 | Curt Monroe | .2644 | 2020 |
