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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Luis Jelarde# | .5137 | 2026 | |
| 2 | Júlio Valentín# | .4928 | 2021 | |
| 3 | Fernando Sánchez# | .4927 | 2024 | |
| 4 | Gilbert Graham# | .4636 | 2022 | |
| 5 | Adrian Smith# | .4286 | 2020 | |
| 6 | Qi-zhen Loong# | .4172 | 2022 | |
| 7 | Gilbert Graham# | .4037 | 2023 | |
| 8 | John Thompson# | .4007 | 2023 | |
| 9 | José López | .3904 | 2022 | |
| 10 | Brent van Schoonhoven# | .3874 | 2023 | |
| 11 | Grady Walkinshaw# | .3854 | 2026 | |
| 12 | Claudio Torres# | .3846 | 2020 | |
| 13 | Artie Miller# | .3817 | 2023 | |
| 14 | Neal Hart | .3782 | 2020 | |
| 15 | Bennett Bates# | .3780 | 2022 | |
| 16 | Fernando Trinidad# | .3773 | 2026 | |
| 17 | Ramón Hernández# | .3711 | 2026 | |
| 18 | Marshall Attwood# | .3671 | 2020 | |
| 19 | Júlio Valentín# | .3621 | 2020 | |
| 20 | Ricardo Pacheco# | .3587 | 2021 | |
| 21 | Mal Green | .3581 | 2023 | |
| 22 | Dan Holliday | .3519 | 2024 | |
| 23 | Dan Holliday | .3478 | 2023 | |
| 24 | Kip Burks | .3372 | 2022 | |
| 25 | Alfredo Rivera# | .3365 | 2022 | |
| 26 | Rubén Hernández# | .3343 | 2026 | |
| 27 | William Miles | .3333 | 2022 | |
| 28 | Sergio García | .3256 | 2020 | |
| 29 | Rubén Alvarado# | .3225 | 2023 | |
| 30 | Gianpaolo Monachino# | .3203 | 2025 | |
| 31 | José Carlos Ramos# | .3141 | 2020 | |
| 32 | Clark Calhoun | .3092 | 2021 | |
| 33 | Natale Langushi# | .3068 | 2024 | |
| 34 | Barry Welch# | .3028 | 2021 | |
| 35 | Lúcio Sánchez# | .2960 | 2024 | |
| 36 | Markus Thompson# | .2803 | 2026 | |
| 37 | Carlos Soto# | .2698 | 2025 | |
| 38 | Ralph Gilbert# | .2425 | 2024 | |
| 39 | Clark Calhoun | .2365 | 2020 |
