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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | B9 | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Deacon Phillippe | 0.83 | 1899-1911 | |
| 2 | Babe Adams# | 0.99 | 1906-1915 | |
| 3 | Jesse Tannehill | 1.41 | 1894-1910 | |
| 4 | Cy Young | 1.46 | 1890-1911 | |
| 5 | Addie Joss | 1.50 | 1902-1910 | |
| 6 | Mordecai Brown# | 1.53 | 1903-1915 | |
| 7 | Jack Pfiester | 1.73 | 1904-1911 | |
| 8 | Christy Mathewson# | 2.02 | 1900-1915 | |
| 9 | Otto Hess | 2.05 | 1902-1914 | |
| 10 | Red Ames# | 2.26 | 1903-1915 | |
| 11 | Eddie Plank# | 2.50 | 1901-1915 | |
| 12 | Rube Waddell | 2.60 | 1897-1910 | |
| 13 | Bill Bernhard | 2.62 | 1899-1907 | |
| 14 | Rube Marquard# | 2.75 | 1908-1915 | |
| 14 | Jeff Tesreau# | 2.75 | 1912-1915 | |
| 16 | Joe Wood# | 2.94 | 1908-1915 | |
| 17 | Charles Bender# | 3.05 | 1903-1915 | |
| 18 | Orval Overall | 3.71 | 1905-1913 | |
| 19 | Dutch Leonard# | 4.37 | 1913-1915 | |
| 20 | Vean Gregg# | 5.83 | 1911-1915 |
