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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Christy Mathewson# | 0.52 | 1905 | |
| 1 | Jake Campbell# | 0.52 | 1913 | |
| 3 | Toad Ramsey | 0.67 | 1906 | |
| 4 | Joe McGinnity | 0.76 | 1905 | |
| 5 | Carl Lundgren# | 0.83 | 1905 | |
| 5 | Addie Joss# | 0.83 | 1906 | |
| 7 | Dennis Lamkin# | 0.88 | 1910 | |
| 8 | Hugh Bedient# | 0.90 | 1913 | |
| 9 | Deacon Phillippe | 0.93 | 1903 | |
| 10 | Jake Campbell# | 0.96 | 1910 | |
| 10 | Jesse Burkett | 0.96 | 1907 | |
| 12 | John Truan# | 1.00 | 1908 | |
| 13 | Danny Maxwell# | 1.01 | 1908 | |
| 14 | Justin Huber# | 1.06 | 1911 | |
| 14 | Frank Groves# | 1.06 | 1908 | |
| 16 | Matt Adams# | 1.07 | 1914 | |
| 17 | Tim Mitchell# | 1.09 | 1914 | |
| 18 | Bob Black | 1.11 | 1906 | |
| 18 | Andrew Foster# | 1.11 | 1912 | |
| 18 | Jake Campbell# | 1.11 | 1909 | |
| 21 | Eddie Plank | 1.12 | 1905 | |
| 22 | Danny Maxwell# | 1.13 | 1909 | |
| 23 | Addie Joss# | 1.22 | 1908 | |
| 24 | Brent Mattern# | 1.25 | 1908 | |
| 25 | Ham Iburg# | 1.26 | 1906 | |
| 26 | Doc White | 1.27 | 1906 | |
| 26 | Hardie Henderson | 1.27 | 1905 | |
| 28 | Frank Groves# | 1.29 | 1907 | |
| 29 | Bob Black | 1.33 | 1907 | |
| 30 | Bob Black | 1.35 | 1910 | |
| 31 | Jake Campbell# | 1.36 | 1911 | |
| 32 | Brent Mattern# | 1.38 | 1910 | |
| 33 | Matt Adams# | 1.40 | 1913 | |
| 34 | Brent Mattern# | 1.41 | 1909 | |
| 34 | Pink Hawley# | 1.41 | 1910 | |
| 34 | Addie Joss# | 1.41 | 1912 | |
| 37 | Barney Wolfe | 1.59 | 1911 | |
| 37 | George Van Haltren | 1.59 | 1908 | |
| 39 | Clay Marple# | 1.60 | 1913 | |
| 40 | Brent Mattern# | 1.79 | 1906 |
