| 12/31/2015 | ||||||
 |
| |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Nobuhisa Yokoyama# | .6778 | 2013-2013 | |
| 2 | Mokichi Kono# | .6448 | 2015-2015 | |
| 3 | Kazuyoshi Suitani# | .6354 | 2012-2012 | |
| 4 | Yoritomo Yamaguchi# | .6106 | 2015-2015 | |
| 5 | Seinosuke Onishi# | .5668 | 2014-2014 | |
| 6 | Tetsui Jouon# | .5604 | 2012-2012 | |
| 7 | Tetsuo Chikuda# | .5526 | 2015-2015 | |
| 8 | Yoshino Kobayashi# | .5373 | 2014-2014 | |
| 9 | Murai Ito | .5120 | 2012-2012 | |
| 10 | Yohachi Nakashima# | .5107 | 2015-2015 | |
| 11 | Yasuyuki Hirano# | .4787 | 2014-2014 | |
| 12 | Sumiteru Yoshida# | .4442 | 2014-2014 | |
| 13 | Toshikazu Kaneko | .4309 | 2013-2013 | |
| 14 | Shun Asano# | .3664 | 2014-2014 | |
| 15 | Shunsho Matsuo# | .3634 | 2014-2014 | |
| 16 | Yoichi Sumita# | .3394 | 2014-2014 | |
| 17 | Masakado Kobayashi | .3333 | 2013-2013 |
