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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Tetsui Takahashi# | .5058 | 2013-2013 | |
| 2 | Yasukazu Kiyomizu# | .5052 | 2017-2017 | |
| 3 | Kensaku Mizoguchi# | .4953 | 2015-2015 | |
| 4 | Jiro Yamaguchi# | .4915 | 2014-2014 | |
| 5 | Kazunari Ueda# | .4894 | 2014-2014 | |
| 6 | Tetsuzan Daikawa# | .4729 | 2016-2016 | |
| 7 | Hideki Okamoto | .4644 | 2013-2013 | |
| 8 | Shunji Sugimoto | .4618 | 2014-2014 | |
| 9 | Kazuhiro Kojima# | .4592 | 2013-2013 | |
| 10 | Soshu Kitamura# | .4535 | 2013-2013 | |
| 11 | Naganori Okada | .4426 | 2016-2016 | |
| 12 | Sadao Koizumi# | .4377 | 2015-2015 | |
| 13 | Iemitsu Kitamura | .4356 | 2014-2014 | |
| 14 | Shigetaka Rin | .4317 | 2012-2012 | |
| 15 | Yoshiki Sasaki# | .4283 | 2013-2013 | |
| 16 | Octavio Rojas# | .4242 | 2012-2012 | |
| 17 | Akihisa Harada | .4232 | 2015-2015 | |
| 18 | Yoshitora Kikuchi | .4189 | 2015-2015 | |
| 19 | Tagashashi Iwata | .4176 | 2012-2012 | |
| 20 | Kuemon Yasuda# | .4162 | 2014-2014 | |
| 21 | Kazutoshi Samurakami# | .4157 | 2013-2013 | |
| 22 | Yoshihito Agano | .4153 | 2013-2013 | |
| 23 | Yoshitaka Okubo | .4138 | 2014-2014 | |
| 24 | Toin Ishii | .4101 | 2015-2015 | |
| 25 | Harumi Ine# | .3989 | 2016-2016 | |
| 26 | Kenshin Toiguchi# | .3922 | 2014-2014 | |
| 27 | Eitoku Sasaki# | .3905 | 2016-2016 | |
| 28 | Shusui Kikuchi# | .3793 | 2016-2016 | |
| 29 | Tokuma Takaki | .3768 | 2015-2015 | |
| 30 | Shotaro Fujii | .3762 | 2012-2012 | |
| 31 | Yoshihiro Inoue# | .3700 | 2012-2012 | |
| 32 | Tatsui Ikeda | .3652 | 2013-2013 | |
| 33 | Ichiro Iwata | .3620 | 2015-2015 | |
| 34 | Hiroharu Kono | .3571 | 2013-2013 | |
| 35 | Yoshihide Kodama# | .3564 | 2016-2016 | |
| 36 | Yodo Miyashita# | .3457 | 2012-2012 | |
| 37 | Yoshitora Watanabe | .3450 | 2014-2014 | |
| 38 | Tatsui Kamihara | .3413 | 2013-2013 | |
| 39 | Koki Nakayama | .3213 | 2012-2012 | |
| 40 | Yoshikazu Takahashi# | .3212 | 2016-2016 | |
| 41 | Shojiro Tamura# | .3145 | 2016-2016 | |
| 42 | Shusaku Kikuchi | .3134 | 2015-2015 | |
| 43 | Yoichi Oishi# | .3077 | 2016-2016 | |
| 44 | Yukio Yamada | .3075 | 2015-2015 | |
| 45 | Kiyomitsu Akiyama# | .3030 | 2016-2016 | |
| 46 | Mabuchi Onishi | .3014 | 2012-2012 | |
| 47 | Sotatsu Yokoyama | .2750 | 2013-2013 |
