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| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Lou Adler# | .5403 | 1890 | |
| 2 | Silas Williams# | .3893 | 1890 | |
| 3 | Art Phelps# | .3819 | 1890 | |
| 4 | Henri Lavigne# | .3577 | 1890 | |
| 5 | Will Colcord# | .2310 | 1890 |
