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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Mushanokoji Takano | .5344 | 2014-2014 | |
| 2 | Shiro Kamida# | .5099 | 2016-2016 | |
| 3 | Hirokazu Matsumoto# | .4958 | 2015-2015 | |
| 4 | Kata Nishikawa# | .4753 | 2016-2016 | |
| 5 | Nobuhisa Yokoyama# | .4752 | 2013-2013 | |
| 6 | Tsuramatsu Iijima# | .4676 | 2014-2014 | |
| 7 | Masaki Baba# | .4665 | 2013-2013 | |
| 8 | Tatsuzo Watanabe | .4557 | 2013-2013 | |
| 9 | Yoritomo Yamaguchi# | .4490 | 2015-2015 | |
| 10 | Naonobu Seki# | .4470 | 2016-2016 | |
| 11 | Maresuke Kato# | .4407 | 2015-2015 | |
| 12 | Mokichi Kono# | .4226 | 2015-2015 | |
| 13 | Seinosuke Onishi | .4172 | 2014-2014 | |
| 14 | Ken'ichi Amano# | .4158 | 2016-2016 | |
| 14 | Naofumi Nakayama# | .4158 | 2016-2016 | |
| 16 | Yohachi Nakashima | .4067 | 2015-2015 | |
| 17 | Soshu Hirose | .4052 | 2013-2013 | |
| 18 | Yasuyuki Hirano# | .4027 | 2014-2014 | |
| 19 | Toshikazu Kaneko | .4005 | 2013-2013 | |
| 20 | Teika Seki# | .3984 | 2016-2016 | |
| 21 | Yoshihiro Kouno | .3956 | 2012-2012 | |
| 22 | Yoshino Kobayashi# | .3938 | 2014-2014 | |
| 23 | Murai Ito | .3864 | 2012-2012 | |
| 24 | Kiyohisa Eida# | .3831 | 2017-2017 | |
| 25 | Kazuyoshi Suitani# | .3812 | 2012-2012 | |
| 26 | Kazuo Kichida | .3810 | 2013-2013 | |
| 27 | Takane Saito | .3802 | 2013-2013 | |
| 28 | Tetsui Jouon# | .3780 | 2012-2012 | |
| 29 | Yuichi Ogawa | .3777 | 2015-2015 | |
| 30 | Kokei Sugimoto# | .3750 | 2016-2016 | |
| 31 | Tetsuo Chikuda# | .3731 | 2015-2015 | |
| 32 | Seitaro Maruyama# | .3689 | 2012-2012 | |
| 33 | Sumiteru Yoshida | .3564 | 2014-2014 | |
| 34 | Tatsukichi Otani | .3556 | 2013-2013 | |
| 35 | Shun Asano | .3526 | 2014-2014 | |
| 36 | Hideo Aoki | .3284 | 2012-2012 | |
| 37 | Yoichi Sumita | .3209 | 2014-2014 | |
| 38 | Shunsho Matsuo | .3196 | 2014-2014 | |
| 39 | Sojuro Ueda | .3113 | 2012-2012 | |
| 40 | Masakado Kobayashi | .3091 | 2013-2013 | |
| 41 | Masaharu Kichikawa | .3069 | 2012-2012 | |
| 41 | Yoriie Fujita | .3069 | 2012-2012 | |
| 43 | Kyoichi Okabe# | .2956 | 2016-2016 | |
| 44 | Keisuke Maeda | .2837 | 2013-2013 |
