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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Mitsuharu Kohara# | .5117 | 2015-2015 | |
| 2 | Kinnosuke Miyazaki# | .4987 | 2015-2015 | |
| 3 | Misao Kokawa# | .4962 | 2014-2014 | |
| 4 | Tomiji Inoue | .4638 | 2013-2013 | |
| 5 | Toshikasu Ono# | .4600 | 2016-2016 | |
| 6 | Kichisaburo Suzuki# | .4496 | 2013-2013 | |
| 7 | Yoshihisa Yamada | .4436 | 2013-2013 | |
| 8 | Eisuke Kobayashi | .4415 | 2014-2014 | |
| 9 | Tomokazu Fujii# | .4330 | 2016-2016 | |
| 10 | Hidehira Ogawa# | .4270 | 2016-2016 | |
| 11 | Osamu Ito# | .4256 | 2014-2014 | |
| 12 | Katsuhiko Yamamoto# | .4209 | 2013-2013 | |
| 13 | Tetsu Araki# | .4188 | 2016-2016 | |
| 14 | Soshu Rin# | .4000 | 2012-2012 | |
| 15 | Shintaro Rin | .3944 | 2012-2012 | |
| 16 | Noriyuki Oshima | .3918 | 2015-2015 | |
| 17 | Tsuneari Okamura | .3815 | 2014-2014 | |
| 18 | Toshiharu Wada# | .3808 | 2016-2016 | |
| 19 | Hiroaki Hirayama | .3770 | 2015-2015 | |
| 20 | Iemochi Takahashi | .3722 | 2013-2013 | |
| 21 | Seiichi Tanaka# | .3625 | 2013-2013 | |
| 22 | Jo Watanabe# | .3612 | 2015-2015 | |
| 23 | Kuniyuki Makino | .3574 | 2013-2013 | |
| 24 | Shiba Yoshii | .3547 | 2013-2013 | |
| 25 | Yasukazu Onishi# | .3536 | 2015-2015 | |
| 26 | Tetsui Okamoto | .3475 | 2012-2012 | |
| 27 | Shinkichi Kokawa | .3472 | 2013-2013 | |
| 28 | Katsunan Ogino | .3417 | 2013-2013 | |
| 29 | Hogai Kuwabara | .3410 | 2012-2012 | |
| 30 | Takuro Ono# | .3397 | 2016-2016 | |
| 31 | Nobuhito Koyama | .3382 | 2012-2012 | |
| 32 | Nobukazu Ogura# | .3364 | 2016-2016 | |
| 33 | Hisashi Inoue | .3345 | 2015-2015 | |
| 34 | Masahiko Koga | .3333 | 2014-2014 | |
| 35 | Yodo Hagiwara | .3300 | 2015-2015 | |
| 36 | Kansuke Nakada | .3238 | 2014-2014 | |
| 37 | Ichiro Fukuda | .3207 | 2012-2012 | |
| 38 | Kyoichi Yamaguchi# | .3179 | 2016-2016 | |
| 39 | Maresuke Kodama | .3144 | 2012-2012 | |
| 40 | Shihi Suzuki | .3069 | 2015-2015 | |
| 41 | Akihisa Inagawa# | .3057 | 2016-2016 | |
| 42 | Masahiro Asai | .3038 | 2015-2015 | |
| 43 | Yoshii Kubo | .2812 | 2014-2014 | |
| 44 | Tsuramatsu Furukawa | .2808 | 2012-2012 | |
| 45 | Ryutaro Nemoto | .2374 | 2012-2012 |
