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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Raymond Henderson | .6009 | 2019 | |
| 2 | J.T. Realmuto# | .5964 | 2014 | |
| 3 | Leonardo Bernal# | .5850 | 2025 | |
| 4 | Anthony Hermelyn | .5725 | 2018 | |
| 5 | Keibert Ruiz# | .5398 | 2019 | |
| 6 | Kellin Deglan | .5359 | 2014 | |
| 7 | Alfredo Duno# | .5056 | 2026 | |
| 8 | Braeden Schlehuber | .4987 | 2017 | |
| 9 | Chuckie Robinson# | .4736 | 2025 | |
| 10 | William Contreras# | .4726 | 2020 | |
| 11 | John Murrian | .4712 | 2016 | |
| 12 | Michael Perez# | .4655 | 2018 | |
| 13 | Kevin Plawecki# | .4590 | 2014 | |
| 14 | Oscar Hernandez | .4577 | 2015 | |
| 15 | Austin Hedges# | .4560 | 2015 | |
| 16 | Clint Coulter# | .4539 | 2014 | |
| 17 | Dillon Dingler# | .4470 | 2023 | |
| 18 | Keith Skinner | .4463 | 2019 | |
| 19 | Matt Winn | .4456 | 2018 | |
| 20 | Silas Ardoin# | .4420 | 2024 | |
| 21 | Jakson Reetz# | .4385 | 2018 | |
| 22 | Dan Rizzie | .4357 | 2020 | |
| 23 | Oscar Hernandez | .4346 | 2014 | |
| 24 | Nathan Flewelling# | .4265 | 2026 | |
| 25 | Ali Sanchez# | .4125 | 2018 | |
| 26 | Michael Perez# | .4096 | 2016 | |
| 27 | Chris Okey# | .4084 | 2019 | |
| 28 | Blake Forsythe | .3897 | 2015 | |
| 29 | Sebastian Rivero# | .3883 | 2025 | |
| 30 | Jason Lopez# | .3753 | 2022 | |
| 31 | Jason Lopez# | .3683 | 2021 | |
| 32 | Brady Lindsly# | .3551 | 2025 | |
| 33 | Garrett Wolforth | .3518 | 2021 |
