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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Tetsu Nishimura# | 1.058 | 2012-2012 | |
| 2 | Toyoaki Ishikawa | 1.039 | 2015-2015 | |
| 3 | Takuma Kobayashi | 1.034 | 2013-2013 | |
| 4 | Taki Wada# | 1.032 | 2014-2014 | |
| 5 | Sekien Ohashi | 1.029 | 2014-2014 | |
| 6 | Atamas Manas# | 1.023 | 2017-2018 | |
| 7 | Nobuo Sugahara | 1.003 | 2014-2014 | |
| 8 | Hiroji Sugahara | 1.001 | 2014-2014 | |
| 9 | Katsumoto Nakayama# | 0.993 | 2014-2014 |
