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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Tatsui Ikeda | 1.045 | 2013-2013 | |
| 2 | Kazutoshi Samurakami# | 1.040 | 2013-2013 | |
| 3 | Iemitsu Kitamura | 1.038 | 2014-2014 | |
| 4 | Ichiro Iwata | 1.032 | 2015-2015 | |
| 5 | Akihisa Harada | 1.028 | 2015-2015 | |
| 6 | Jiro Yamaguchi# | 1.027 | 2014-2014 | |
| 7 | Shojiro Tamura# | 1.018 | 2016-2016 | |
| 8 | Octavio Rojas# | 1.014 | 2012-2012 | |
| 9 | Shusui Kikuchi# | 1.006 | 2016-2016 | |
| 10 | Soshu Kitamura# | 1.003 | 2013-2013 | |
| 10 | Kiyomitsu Akiyama# | 1.003 | 2016-2016 | |
| 10 | Sadao Koizumi# | 1.003 | 2015-2015 | |
| 13 | Tetsuzan Daikawa# | 0.997 | 2016-2016 | |
| 13 | Eitoku Sasaki# | 0.997 | 2016-2016 | |
| 13 | Tagashashi Iwata | 0.997 | 2012-2012 | |
| 16 | Kenshin Toiguchi# | 0.994 | 2014-2014 | |
| 17 | Yodo Miyashita# | 0.991 | 2012-2012 | |
| 18 | Kensaku Mizoguchi# | 0.990 | 2015-2015 | |
| 19 | Kazunari Ueda# | 0.983 | 2014-2014 | |
| 20 | Toin Ishii | 0.963 | 2015-2015 | |
| 21 | Yoshiki Sasaki# | 0.961 | 2013-2013 | |
| 22 | Tokuma Takaki | 0.958 | 2015-2015 | |
| 23 | Yoshihiro Inoue# | 0.945 | 2012-2012 | |
| 24 | Kazuhiro Kojima# | 0.939 | 2013-2013 |
