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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Hirotsugu Kichikawa# | .4993 | 2034-2043 | |
| 2 | César Cantú | .4969 | 2026-2035 | |
| 3 | Taroemon Yamada# | .4955 | 2023-2032 | |
| 4 | Hisashi Kouda# | .4359 | 2031-2039 | |
| 5 | Izumo Kiyomizu# | .4341 | 2029-2038 | |
| 6 | Matsu Miyake# | .3913 | 2033-2043 |
