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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 | Christy Mathewson# | 0.73 | 1915 | |
| 5 | Joe McGinnity | 0.76 | 1905 | |
| 6 | Carl Lundgren# | 0.83 | 1905 | |
| 6 | Addie Joss# | 0.83 | 1906 | |
| 8 | Dennis Lamkin | 0.88 | 1910 | |
| 9 | Hugh Bedient# | 0.90 | 1913 | |
| 10 | Deacon Phillippe | 0.93 | 1903 | |
| 11 | Brendan McDowell# | 0.94 | 1915 | |
| 12 | Jake Campbell# | 0.96 | 1910 | |
| 12 | Jesse Burkett | 0.96 | 1907 | |
| 14 | John Truan# | 1.00 | 1908 | |
| 15 | Danny Maxwell# | 1.01 | 1908 | |
| 16 | Frank Groves# | 1.06 | 1908 | |
| 16 | Justin Huber# | 1.06 | 1911 | |
| 18 | Matt Adams# | 1.07 | 1914 | |
| 19 | Tim Mitchell# | 1.09 | 1914 | |
| 20 | Bob Black | 1.11 | 1906 | |
| 20 | Jake Campbell# | 1.11 | 1909 | |
| 20 | Andrew Foster# | 1.11 | 1912 | |
| 23 | Eddie Plank | 1.12 | 1905 | |
| 24 | Danny Maxwell# | 1.13 | 1909 | |
| 25 | Addie Joss# | 1.22 | 1908 | |
| 26 | Brent Mattern# | 1.25 | 1908 | |
| 27 | Ham Iburg | 1.26 | 1906 | |
| 28 | Hardie Henderson | 1.27 | 1905 | |
| 28 | Doc White | 1.27 | 1906 | |
| 30 | Frank Groves# | 1.29 | 1907 | |
| 31 | Bob Black | 1.33 | 1907 | |
| 32 | Bob Black | 1.35 | 1910 | |
| 33 | Jake Campbell# | 1.36 | 1911 | |
| 34 | Brent Mattern# | 1.38 | 1910 | |
| 35 | Matt Adams# | 1.40 | 1913 | |
| 36 | Pink Hawley# | 1.41 | 1910 | |
| 36 | Brent Mattern# | 1.41 | 1909 | |
| 36 | Addie Joss# | 1.41 | 1912 | |
| 39 | Barney Wolfe | 1.59 | 1911 | |
| 39 | George Van Haltren | 1.59 | 1908 | |
| 41 | Clay Marple# | 1.60 | 1913 | |
| 41 | George Mullin# | 1.60 | 1915 | |
| 43 | Ian Moseley# | 1.67 | 1915 | |
| 44 | Brent Mattern# | 1.79 | 1906 |
