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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Babe Adams# | 0.77 | 1906-1916 | |
| 2 | Addie Joss | 0.86 | 1902-1910 | |
| 3 | Jesse Tannehill | 0.92 | 1894-1910 | |
| 4 | Orval Overall | 1.09 | 1905-1913 | |
| 5 | Cy Young* | 1.15 | 1890-1911 | |
| 6 | Eddie Plank# | 1.17 | 1901-1916 | |
| 7 | Christy Mathewson | 1.18 | 1900-1916 | |
| 8 | Dutch Leonard# | 1.19 | 1913-1916 | |
| 9 | Deacon Phillippe | 1.22 | 1899-1911 | |
| 10 | Jeff Tesreau# | 1.29 | 1912-1916 | |
| 11 | Otto Hess | 1.30 | 1902-1914 | |
| 12 | Mordecai Brown | 1.31 | 1903-1916 | |
| 13 | Rube Waddell | 1.33 | 1897-1910 | |
| 14 | Charles Bender# | 1.34 | 1903-1916 | |
| 15 | Red Ames# | 1.36 | 1903-1916 | |
| 16 | Joe Wood# | 1.37 | 1908-1916 | |
| 17 | Bill Bernhard | 1.43 | 1899-1907 | |
| 17 | Jack Pfiester | 1.43 | 1904-1911 | |
| 19 | Rube Marquard# | 1.69 | 1908-1916 | |
| 20 | Vean Gregg# | 1.99 | 1911-1916 |
