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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Yodo Inagaki# | .6705 | 2012-2012 | |
| 2 | Shusaku Sugiyama# | .6551 | 2015-2015 | |
| 3 | Saikaku Endo | .6380 | 2013-2013 | |
| 4 | Seitaro Uenohara# | .5745 | 2012-2012 | |
| 5 | Soseki Aoki# | .5562 | 2016-2016 | |
| 6 | Matsuyo Nakada | .4959 | 2012-2012 | |
| 7 | Toyokazu Hasegawa | .4934 | 2014-2014 | |
| 8 | Hiroaki Suzuki# | .4891 | 2013-2013 | |
| 9 | Yoshifumi Yamamoto | .4871 | 2014-2014 | |
| 10 | Yoshino Okabe# | .4849 | 2014-2014 | |
| 11 | Toshikazu Sakai | .4781 | 2012-2012 | |
| 12 | Kazuyuki Suzuki | .4741 | 2013-2013 | |
| 13 | Totoya Fukushima# | .4655 | 2013-2013 | |
| 14 | Toyoaki Azuma | .4385 | 2015-2015 | |
| 15 | Toshio Shiroi# | .4348 | 2016-2016 | |
| 16 | Yoshida Hayakawa# | .4342 | 2012-2012 | |
| 17 | Ieyoshi Matsuo | .4324 | 2015-2015 | |
| 18 | Kitahachi Matsushita | .4286 | 2013-2013 | |
| 19 | Yugoro Kudara# | .4253 | 2013-2013 | |
| 20 | Norogumi Suzuki# | .4181 | 2016-2016 | |
| 21 | Yoshitaka Kan# | .3960 | 2016-2016 | |
| 22 | Kiichi Okazaki | .3917 | 2013-2013 | |
| 23 | Tetsuhiko Mori# | .3898 | 2016-2016 | |
| 24 | Nobuhiko Okuta | .3811 | 2014-2014 | |
| 25 | Narihari Kuhabara# | .3800 | 2016-2016 | |
| 26 | Robun Tanaka# | .3767 | 2016-2016 | |
| 27 | Seiryo Miyazaki | .3737 | 2015-2015 | |
| 28 | Yoriyoshi Ine# | .3681 | 2016-2016 | |
| 29 | Sosa Hayakawa | .3642 | 2016-2016 | |
| 30 | Kichibei Takeuchi | .3636 | 2015-2015 | |
| 31 | Ryuzaburo Oda | .3612 | 2014-2014 | |
| 32 | Hirotada Sasaki | .3545 | 2014-2014 | |
| 33 | Sadaharu Watanabe | .3452 | 2014-2014 | |
| 34 | Hiroharu Mori | .3445 | 2016-2016 | |
| 34 | Soichiro Sugiyama | .3445 | 2014-2014 | |
| 36 | Tanyu Suzuki | .3390 | 2012-2012 | |
| 37 | Masakado Kichida | .3354 | 2015-2015 | |
| 38 | Yeijiro Ohayashi | .3351 | 2013-2013 | |
| 39 | Rintaro Toyota | .3307 | 2013-2013 | |
| 40 | Yasuo Kato | .3296 | 2013-2013 | |
| 41 | Hikaru Tashima# | .3226 | 2016-2016 | |
| 42 | Toshiharu Kichida | .3188 | 2014-2014 | |
| 43 | Sosa Higashi | .3142 | 2015-2015 | |
| 44 | Noriyuki Inoue# | .3136 | 2016-2016 | |
| 45 | Sozen Kimura | .3079 | 2014-2014 | |
| 46 | Koji Miyakawa | .3065 | 2014-2014 | |
| 47 | Yoshifusa Shimizu | .2910 | 2015-2015 | |
| 48 | Sozen Shimizu | .2903 | 2015-2015 | |
| 49 | Yoshihisa Chikafuji | .2815 | 2015-2015 | |
| 50 | Yorikane Sai | .2755 | 2015-2015 |
