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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OOBP | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Jake Campbell# | .1500 | 1913 | |
| 2 | Christy Mathewson# | .1596 | 1905 | |
| 3 | Toad Ramsey | .1791 | 1906 | |
| 4 | Joe McGinnity | .2000 | 1905 | |
| 5 | Carl Lundgren# | .2206 | 1905 | |
| 6 | Deacon Phillippe | .2308 | 1903 | |
| 7 | Addie Joss# | .2319 | 1906 | |
| 8 | Hugh Bedient# | .2344 | 1913 | |
| 9 | John Truan# | .2388 | 1908 | |
| 10 | Jake Campbell# | .2424 | 1910 | |
| 11 | Dennis Lamkin# | .2500 | 1910 | |
| 12 | Jesse Burkett | .2535 | 1907 | |
| 13 | Danny Maxwell# | .2626 | 1908 | |
| 14 | Bob Black | .2658 | 1906 | |
| 15 | Frank Groves# | .2727 | 1908 | |
| 16 | Danny Maxwell# | .2742 | 1909 | |
| 17 | Jake Campbell# | .2817 | 1909 | |
| 18 | Justin Huber# | .2836 | 1911 | |
| 19 | Andrew Foster# | .2857 | 1912 | |
| 19 | Eddie Plank | .2857 | 1905 | |
| 21 | Brent Mattern# | .2941 | 1908 | |
| 22 | Addie Joss# | .3069 | 1908 | |
| 23 | Hardie Henderson | .3115 | 1905 | |
| 24 | Doc White# | .3175 | 1906 | |
| 25 | Ham Iburg# | .3176 | 1906 | |
| 26 | Addie Joss# | .3200 | 1912 | |
| 27 | Bob Black | .3218 | 1907 | |
| 28 | Frank Groves# | .3265 | 1907 | |
| 29 | Pink Hawley# | .3333 | 1910 | |
| 30 | Jake Campbell# | .3378 | 1911 | |
| 31 | Bob Black | .3382 | 1910 | |
| 32 | Matt Adams# | .3438 | 1913 | |
| 33 | Brent Mattern# | .3478 | 1910 | |
| 34 | Barney Wolfe# | .3600 | 1911 | |
| 35 | Brent Mattern# | .3662 | 1909 | |
| 36 | Clay Marple# | .3692 | 1913 | |
| 37 | George Van Haltren | .3714 | 1908 | |
| 38 | Brent Mattern# | .3733 | 1906 |
