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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Naruhiko Kumagai | .7647 | 2013-2013 | |
| 2 | Masahiko Nakamura | .6584 | 2015-2015 | |
| 3 | Yosai Aoyama# | .6446 | 2014-2014 | |
| 4 | Yasushi Kato# | .6269 | 2015-2015 | |
| 5 | Shun Ushiyama | .6015 | 2013-2013 | |
| 6 | Mitsuo Sato | .5875 | 2012-2012 | |
| 7 | Ryu Nakamura# | .5863 | 2013-2013 | |
| 8 | Shuncho Fujita | .5694 | 2012-2012 | |
| 9 | Katsunan Fujimoto# | .5623 | 2016-2016 | |
| 10 | Shunso Meshizuka# | .5604 | 2014-2014 | |
| 11 | Sukejuro Sugimoto | .5602 | 2015-2015 | |
| 12 | Tokuhei Takuda# | .5595 | 2013-2013 | |
| 13 | Shimpei Kamimura | .5536 | 2015-2015 | |
| 14 | Shinsaku Kamida# | .5467 | 2013-2013 | |
| 15 | Keitaro Suzuki# | .5391 | 2013-2013 | |
| 16 | Michihiro Okamoto# | .5181 | 2012-2012 | |
| 17 | Kimi Ohara# | .5143 | 2016-2016 | |
| 18 | Norinaga Kondo# | .5135 | 2013-2013 | |
| 19 | Takuma Yamamoto# | .5022 | 2017-2017 | |
| 20 | Yoriyuki Sanu | .5000 | 2015-2015 | |
| 21 | Takanibu Kobayashi# | .4828 | 2012-2012 | |
| 22 | Tetsu Yamada# | .4797 | 2015-2015 | |
| 23 | Katsunan Sano | .4785 | 2014-2014 | |
| 24 | Sachi Takahashi | .4733 | 2014-2014 | |
| 25 | Aki Maruyama# | .4708 | 2016-2016 | |
| 26 | Hayato Saito | .4706 | 2014-2014 | |
| 27 | Kata Oyama# | .4556 | 2012-2012 | |
| 28 | Hirofumi Rin# | .4534 | 2016-2016 | |
| 29 | Toru Masuda | .4504 | 2012-2012 | |
| 30 | Makoto Ota# | .4415 | 2016-2016 | |
| 31 | Iemitsu Motsuzuki# | .4358 | 2016-2016 | |
| 32 | Yo Sasaki# | .4243 | 2016-2016 | |
| 33 | Kanzaburo Yoshikawa | .4219 | 2014-2014 | |
| 34 | Senichi Iwata | .4148 | 2014-2014 | |
| 35 | Yuichi Yamaguchi | .4144 | 2015-2015 | |
| 36 | Norihisa Yamauchi# | .4095 | 2013-2013 | |
| 37 | Toshikazu Okamura | .4093 | 2014-2014 | |
| 38 | Hikaru Hara | .4083 | 2015-2015 | |
| 39 | Tatsukichi Ohayashi# | .4071 | 2012-2012 | |
| 40 | Isei Masuda# | .4052 | 2016-2016 | |
| 41 | Kichisaburo Komatsu# | .4050 | 2016-2016 | |
| 42 | Masakado Hirano# | .4040 | 2012-2012 | |
| 43 | Toshikasu Akiyama | .3843 | 2015-2015 | |
| 44 | Atsumori Ishikawa | .3826 | 2012-2012 | |
| 45 | Shosuke Shinohara | .3763 | 2012-2012 | |
| 46 | Matsudaira Noguchi# | .3724 | 2017-2017 | |
| 47 | Hidehira Miura | .3669 | 2014-2014 | |
| 48 | Toshikazu Nagai# | .3647 | 2016-2016 | |
| 49 | Yajirobei Hayagawa | .3596 | 2014-2014 | |
| 50 | Hirokazu Ito | .3573 | 2014-2014 | |
| 51 | Shigochiyo Iida# | .3529 | 2017-2017 | |
| 52 | Terumoto Fujimoto# | .3500 | 2017-2017 | |
| 53 | Kiminobu Matsui | .3479 | 2015-2015 | |
| 54 | Teruo Katayama | .3448 | 2014-2014 | |
| 55 | Joji Ishihara | .3344 | 2015-2015 | |
| 56 | Tetsunori Ine# | .3199 | 2016-2016 | |
| 57 | Kiyomori Tanaka# | .3162 | 2016-2016 | |
| 58 | Tanyu Onodera# | .3132 | 2016-2016 | |
| 59 | Yoshihisa Mizuno | .2970 | 2012-2012 | |
| 60 | Yo Inoue | .2793 | 2015-2015 | |
| 61 | Tadaaki Kobayashi | .2780 | 2015-2015 |
