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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ryoma Heida# | .4773 | 2012-2013 | |
| 2 | Jarrod Parrish# | .4426 | 2013-2016 | |
| 3 | Robby Greene# | .4155 | 2012-2015 | |
| 4 | Bob Daniels# | .4120 | 2017-2018 | |
| 5 | David Wall# | .4119 | 2012-2013 | |
| 6 | Paul Butler# | .4008 | 2014-2015 | |
| 7 | Roger George# | .3828 | 2017-2018 | |
| 8 | Rob Johnson# | .3791 | 2012-2016 | |
| 9 | Shiro Yoshida# | .3715 | 2015-2017 | |
| 10 | Brian Woolfrey# | .3666 | 2017-2018 | |
| 11 | Katsumi Sato# | .3639 | 2014-2017 | |
| 12 | Seitaro Maruyama# | .3575 | 2013-2014 | |
| 13 | Jonathan Lush# | .3514 | 2017-2018 | |
| 14 | Johnny Morrison# | .3385 | 2012-2013 | |
| 15 | Alberto Gonzáles# | .3133 | 2016-2017 | |
| 16 | Tetsui Jouon | .3025 | 2013-2016 | |
| 17 | Curt Simpson | .2581 | 2012-2013 |
