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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Katsuhito Kato# | .3618 | 2031-2034 | |
| 2 | Yo Ito# | .3604 | 2030-2033 | |
| 3 | Ed Keller# | .3483 | 2037-2040 | |
| 4 | Keishi Yamashita# | .3279 | 2031-2034 | |
| 5 | Toby Clark# | .3187 | 2035-2038 | |
| 6 | Yasukazu Toiguchi# | .3156 | 2037-2040 | |
| 7 | Roberto Yánez# | .3148 | 2032-2035 | |
| 8 | Anzai Ogawa# | .3024 | 2031-2034 | |
| 9 | Juichi Ueda# | .3017 | 2035-2038 | |
| 10 | Kuniyoshi Gato# | .2994 | 2031-2034 |
