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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Kevin McGonigle# | .6344 | 2026 | |
| 2 | Graham Pauley# | .5795 | 2024 | |
| 3 | Jonah Arenado | .5642 | 2019 | |
| 4 | Renato Nunez | .5515 | 2016 | |
| 5 | Christian Villanueva | .5105 | 2014 | |
| 6 | Josh L. Bell | .5043 | 2015 | |
| 7 | Tyler Filliben | .5010 | 2020 | |
| 8 | Brett Baty# | .4932 | 2022 | |
| 9 | Francisco Martinez | .4888 | 2014 | |
| 10 | Yohandy Morales# | .4876 | 2025 | |
| 11 | Christian Villanueva | .4873 | 2015 | |
| 12 | Kaleb Cowart | .4827 | 2013 | |
| 12 | Jacob Wilson | .4827 | 2017 | |
| 14 | Josh Jung# | .4778 | 2021 | |
| 15 | Taylor Ward# | .4682 | 2019 | |
| 16 | Carlos Rivero | .4661 | 2014 | |
| 17 | Jonah Arenado | .4501 | 2021 | |
| 18 | Zach Remillard# | .4433 | 2025 | |
| 19 | Cayden Wallace# | .4295 | 2024 | |
| 20 | Keith Grieshaber | .4268 | 2020 | |
| 21 | Kirvin Moesquit | .4267 | 2020 | |
| 22 | Tyler Locklear# | .4217 | 2024 | |
| 23 | Caleb Hamilton# | .4175 | 2023 | |
| 24 | Max Schrock# | .4106 | 2025 | |
| 25 | David Adams | .4048 | 2015 | |
| 26 | Jefry Marte | .3989 | 2014 | |
| 27 | Corey Jones | .3919 | 2018 | |
| 28 | Humberto Arteaga | .3815 | 2018 | |
| 29 | Andy Weber# | .3681 | 2025 | |
| 30 | Matt D. Williams | .3515 | 2014 | |
| 31 | Aderlin Mejia | .3397 | 2017 | |
| 32 | Andy Weber# | .3252 | 2024 |
