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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Shunji Sugimoto | .7523 | 2014-2014 | |
| 2 | Tetsui Takahashi# | .6680 | 2013-2013 | |
| 3 | Yasukazu Kiyomizu# | .6609 | 2017-2017 | |
| 4 | Kazunari Ueda# | .6342 | 2014-2014 | |
| 5 | Jiro Yamaguchi# | .6310 | 2014-2014 | |
| 6 | Kazutoshi Samurakami# | .6137 | 2013-2013 | |
| 7 | Kensaku Mizoguchi# | .6024 | 2015-2015 | |
| 8 | Hideki Okamoto | .5951 | 2013-2013 | |
| 9 | Shigetaka Rin | .5912 | 2012-2012 | |
| 10 | Tagashashi Iwata | .5429 | 2012-2012 | |
| 11 | Akihisa Harada | .5417 | 2015-2015 | |
| 12 | Iemitsu Kitamura | .5304 | 2014-2014 | |
| 13 | Octavio Rojas# | .5258 | 2012-2012 | |
| 14 | Yoshitaka Okubo | .5172 | 2014-2014 | |
| 15 | Toin Ishii | .5069 | 2015-2015 | |
| 16 | Eitoku Sasaki# | .5057 | 2016-2016 | |
| 17 | Tetsuzan Daikawa# | .5019 | 2016-2016 | |
| 18 | Kazuhiro Kojima# | .5000 | 2013-2013 | |
| 19 | Soshu Kitamura# | .4934 | 2013-2013 | |
| 20 | Naganori Okada | .4900 | 2016-2016 | |
| 21 | Yoshiki Sasaki# | .4881 | 2013-2013 | |
| 22 | Kuemon Yasuda# | .4803 | 2014-2014 | |
| 23 | Tatsui Ikeda | .4780 | 2013-2013 | |
| 24 | Shusui Kikuchi# | .4769 | 2016-2016 | |
| 25 | Sadao Koizumi# | .4731 | 2015-2015 | |
| 26 | Shotaro Fujii | .4710 | 2012-2012 | |
| 27 | Yoshitora Kikuchi | .4585 | 2015-2015 | |
| 28 | Kenshin Toiguchi# | .4540 | 2014-2014 | |
| 29 | Harumi Ine# | .4521 | 2016-2016 | |
| 30 | Yoshihito Agano | .4457 | 2013-2013 | |
| 31 | Tokuma Takaki | .4040 | 2015-2015 | |
| 32 | Yoshihide Kodama# | .3992 | 2016-2016 | |
| 33 | Yodo Miyashita# | .3889 | 2012-2012 | |
| 34 | Yoshikazu Takahashi# | .3755 | 2016-2016 | |
| 35 | Koki Nakayama | .3746 | 2012-2012 | |
| 36 | Hiroharu Kono | .3745 | 2013-2013 | |
| 37 | Tatsui Kamihara | .3676 | 2013-2013 | |
| 38 | Yoshihiro Inoue# | .3675 | 2012-2012 | |
| 39 | Shojiro Tamura# | .3587 | 2016-2016 | |
| 40 | Kiyomitsu Akiyama# | .3458 | 2016-2016 | |
| 41 | Mabuchi Onishi | .3427 | 2012-2012 | |
| 42 | Ichiro Iwata | .3406 | 2015-2015 | |
| 43 | Shusaku Kikuchi | .3387 | 2015-2015 | |
| 44 | Yoichi Oishi# | .3264 | 2016-2016 | |
| 45 | Yoshitora Watanabe | .3177 | 2014-2014 | |
| 46 | Yukio Yamada | .3145 | 2015-2015 | |
| 47 | Sotatsu Yokoyama | .2948 | 2013-2013 |
