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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | David Henderson | .4806 | 2016-2025 | |
| 2 | Jon Osterman | .4237 | 2028-2042 | |
| 3 | August Force# | .4223 | 2043-2047 | |
| 4 | Gregg Wagner | .4158 | 2019-2028 | |
| 5 | Barry Flauker | .3601 | 2036-2042 | |
| 6 | Juan Caro | .3504 | 2029-2041 | |
| 7 | Nobuo Yamashita | .3417 | 2025-2034 |
