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| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Ed Austin# | .3891 | 1890 | |
| 2 | Rufus Riddick# | .3651 | 1890 | |
| 3 | Walt Trask# | .3597 | 1890 | |
| 4 | Claude Heaton# | .3556 | 1890 | |
| 5 | Herbert Simpson# | .3426 | 1890 | |
| 6 | Walt Alden# | .3156 | 1890 | |
| 7 | Reginald Lafleur# | .3055 | 1890 | |
| 8 | Andy Stanhope# | .2887 | 1890 |
