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| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Dan Madden# | .4847 | 1890 | |
| 2 | Harry Woodford# | .4504 | 1890 | |
| 3 | Joe Wellman# | .4501 | 1890 | |
| 4 | Dan Hawley# | .3550 | 1890 | |
| 5 | Sam Kelly# | .3522 | 1890 | |
| 6 | Fred Klein# | .2969 | 1890 | |
| 7 | Dan Abbott# | .2704 | 1890 | |
| 8 | Theo Meyer# | .2620 | 1890 |
