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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Yasuzo Yamaoka* | .6252 | 2005-2019 | |
| 2 | Brian Klomp | .5798 | 2003-2019 | |
| 3 | Joel Harrison | .5594 | 2001-2017 | |
| 4 | Jose Velasquez | .5481 | 2000-2010 | |
| 5 | Jonathan Ashley | .5405 | 2004-2021 | |
| 6 | Leo Serna# | .5284 | 2014-2026 | |
| 7 | Richard Green | .5162 | 2000-2012 | |
| 8 | Pablo Vegas* | .4964 | 2000-2012 | |
| 9 | Dan Walker | .4959 | 2001-2015 | |
| 10 | Chris Wolf | .4934 | 2000-2016 | |
| 11 | Victor Gonzalez# | .4924 | 2010-2026 | |
| 12 | Jalen Joyner# | .4877 | 2018-2024 | |
| 13 | Ramon Hernandez | .4801 | 2002-2014 | |
| 14 | Manny Hernandez | .4785 | 2002-2013 | |
| 15 | Kevin Galovich | .4764 | 2004-2015 | |
| 16 | Jacob Kennedy# | .4698 | 2014-2026 | |
| 17 | Eric Kukowski# | .4647 | 2021-2026 | |
| 18 | Russ Reinertsen# | .4614 | 2019-2026 | |
| 19 | Josh Sanders | .4573 | 2012-2019 | |
| 20 | Ricky Torres | .4453 | 2000-2009 | |
| 21 | Ray Baker# | .4416 | 2017-2023 | |
| 22 | Irving Schmidt | .4406 | 2004-2011 | |
| 23 | Sam Fellows | .4365 | 2003-2015 | |
| 24 | Devon Randolph | .4334 | 2000-2007 | |
| 25 | J.R. Robbins | .4297 | 2007-2015 | |
| 26 | Casey Schmidt | .4264 | 2003-2016 | |
| 27 | Edwin Guardado | .3888 | 2011-2020 |
