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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Azumamaro Suzuki# | .4950 | 2017-2017 | |
| 2 | Satoshi Kubota# | .4692 | 2016-2016 | |
| 3 | Yasuhide Daikawa# | .4557 | 2016-2016 | |
| 4 | Toyoaki Ishikawa# | .4412 | 2015-2015 | |
| 5 | Toyoharu Okumiya | .4362 | 2013-2013 | |
| 6 | Ichizo Hirose | .4342 | 2012-2012 | |
| 7 | Kohei Takeuchi# | .4200 | 2013-2013 | |
| 8 | Robun Tanaka | .4167 | 2013-2013 | |
| 9 | Tenshin Suto# | .4118 | 2017-2017 | |
| 10 | Ryozo Daikawa | .4101 | 2013-2013 | |
| 11 | Yachi Okamoto# | .4090 | 2016-2016 | |
| 12 | Katsumoto Nakayama# | .4072 | 2014-2014 | |
| 13 | Tetsu Nishimura# | .4035 | 2012-2012 | |
| 14 | Tsuneyo Matsuura# | .4016 | 2016-2016 | |
| 15 | Junji Kichida# | .3953 | 2015-2015 | |
| 16 | Taki Wada# | .3923 | 2014-2014 | |
| 17 | Ichizo Sato# | .3921 | 2015-2015 | |
| 18 | Hyosuke Ishii | .3902 | 2015-2015 | |
| 19 | Nobuo Sugahara | .3855 | 2014-2014 | |
| 20 | Toyotomi Takeuchi# | .3834 | 2014-2014 | |
| 21 | Taizo Kimura | .3830 | 2014-2014 | |
| 22 | Sadao Ando | .3769 | 2015-2015 | |
| 23 | Kensaku Takahashi# | .3750 | 2016-2016 | |
| 24 | Koki Ageda | .3678 | 2015-2015 | |
| 25 | Takanori Higashi# | .3648 | 2012-2012 | |
| 26 | Takenao Ono | .3619 | 2014-2014 | |
| 27 | Kyoichi Jouda# | .3616 | 2016-2016 | |
| 28 | Nakazo Sugano# | .3608 | 2016-2016 | |
| 29 | Takuma Kobayashi | .3595 | 2013-2013 | |
| 30 | Kijuro Seki | .3556 | 2015-2015 | |
| 31 | Konosuke Watanabe | .3531 | 2014-2014 | |
| 32 | Yoshihito Tanabe | .3480 | 2013-2013 | |
| 33 | Sekien Ohashi# | .3444 | 2014-2014 | |
| 34 | Sozen Ito | .3441 | 2015-2015 | |
| 35 | Katsunosuki Yamada | .3373 | 2013-2013 | |
| 36 | Tokugawa Ogawa# | .3360 | 2016-2016 | |
| 37 | Takeichi Kimura | .3321 | 2013-2013 | |
| 38 | Daisuke Watanabe | .3291 | 2015-2015 | |
| 39 | Ryuzaburo Tanaka | .3231 | 2014-2014 | |
| 40 | Hidekazu Watanabe | .3203 | 2012-2012 | |
| 41 | Eisaku Matsuura | .3200 | 2015-2015 | |
| 42 | Ken'ichi Kono | .3199 | 2013-2013 | |
| 43 | Shinichi Nishida# | .3188 | 2016-2016 | |
| 44 | Takafumi Maruyama# | .3149 | 2016-2016 | |
| 45 | Tadanobu Hayagawa | .3119 | 2012-2012 | |
| 46 | Toyokuni Kiyomizu | .3106 | 2015-2015 | |
| 47 | Kijuro Yamada | .3081 | 2014-2014 | |
| 48 | Josuke Kawano | .3070 | 2015-2015 | |
| 49 | Toyokazu Miyake | .3006 | 2013-2013 | |
| 50 | Kichibei Kato | .2972 | 2012-2012 | |
| 51 | Kiyonori Saito# | .2896 | 2016-2016 | |
| 52 | Yoshimune Nakanishi | .2879 | 2014-2014 | |
| 53 | Kazunari Takahashi | .2852 | 2013-2013 | |
| 54 | Hiroji Sugahara | .2774 | 2014-2014 |
