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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Michael Mendez | .5351 | 2007-2020 | |
| 2 | Chris Bryan | .5284 | 2007-2023 | |
| 3 | John Karpf | .5245 | 2004-2021 | |
| 4 | Brett Byrnes* | .5075 | 2001-2016 | |
| 5 | Jason Wilson* | .5020 | 2000-2016 | |
| 6 | Bill Geeslin# | .4954 | 2016-2026 | |
| 7 | Mitsuaki Sakaguchi | .4846 | 2008-2016 | |
| 8 | Dave Van Natta | .4835 | 2000-2009 | |
| 9 | Javier Saiz | .4678 | 2000-2008 | |
| 10 | Chance Smith# | .4557 | 2020-2026 | |
| 11 | Steve Reid | .4554 | 2000-2008 | |
| 12 | Jeff Kerner | .4346 | 2005-2019 | |
| 13 | David Janson | .4245 | 2006-2015 | |
| 14 | Willie Cantu | .4116 | 2001-2009 | |
| 15 | Tommy Martin | .4114 | 2011-2019 | |
| 16 | Bill Larrain | .4091 | 2009-2023 | |
| 17 | Edwin Gomez | .4073 | 2000-2008 | |
| 18 | Joe Fossett | .4059 | 2005-2016 | |
| 19 | Rich Gomez | .4058 | 2000-2008 | |
| 20 | Marcos Amador | .4023 | 2010-2019 | |
| 21 | Bob Cook# | .4015 | 2016-2025 | |
| 22 | David Phelps | .3949 | 2006-2020 | |
| 23 | John Harris# | .3940 | 2013-2022 | |
| 24 | Ian Mattheus | .3802 | 2001-2014 | |
| 25 | Chris Ceccoli | .3791 | 2000-2007 | |
| 26 | Jason Ramsey# | .3783 | 2015-2025 | |
| 27 | Ethan Robertson | .3775 | 2000-2009 | |
| 28 | Joaquin Bermudez | .3752 | 2009-2018 | |
| 29 | Alec Pavelka# | .3731 | 2013-2023 | |
| 30 | Adam Ponder | .3597 | 2000-2011 |
