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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Russ Buker | .4643 | 2017-2020 | |
| 2 | Chandler Eckard# | .4474 | 2019-2023 | |
| 3 | Tetsu Araki# | .4393 | 2017-2025 | |
| 4 | Shiro Yoshida | .4252 | 2015-2025 | |
| 5 | Carlos Durán# | .4234 | 2020-2024 | |
| 6 | Toshiki Takaki | .4112 | 2014-2025 | |
| 7 | Noriyuki Rin# | .4108 | 2015-2027 | |
| 8 | Raúl Martínez | .4030 | 2014-2020 | |
| 9 | Barrett Morgan# | .4010 | 2020-2024 | |
| 10 | Todd Barrett | .3983 | 2017-2020 | |
| 11 | Shaun Sharp# | .3891 | 2021-2026 | |
| 12 | Pedro Ramírez# | .3705 | 2018-2023 | |
| 13 | António Costello | .3660 | 2017-2023 | |
| 14 | Iemochi Hayashi | .3641 | 2017-2024 | |
| 15 | Alberto Gonzáles | .3633 | 2015-2022 | |
| 16 | Louis Loder# | .3630 | 2022-2026 | |
| 17 | Shiro Sugahara | .3604 | 2015-2022 | |
| 18 | Colm Jackman# | .3597 | 2022-2027 | |
| 19 | Jae-hoon Park# | .3441 | 2021-2024 | |
| 20 | Seitaro Yamada# | .3410 | 2017-2027 | |
| 21 | Lewis Buckley# | .3317 | 2019-2026 | |
| 22 | Tsunayoshi Ito# | .3291 | 2024-2027 | |
| 23 | Shunso Kono | .3100 | 2015-2021 | |
| 24 | Mamoru Nemoto | .3063 | 2016-2024 | |
| 25 | Mitsuzuka Kobayashi# | .2863 | 2013-2017 | |
| 26 | Takaaki Takahashi | .2695 | 2016-2022 |
