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| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Ed Dibrell# | .5107 | 1890 | |
| 2 | Al Chatman# | .4632 | 1890 | |
| 3 | Roy Bancroft# | .4599 | 1890 | |
| 4 | Lew Clancy# | .4577 | 1890 | |
| 5 | Tom Dunn# | .4109 | 1890 | |
| 6 | George Tremblay# | .2991 | 1890 | |
| 7 | Joe Osborn# | .2909 | 1890 |
