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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OSLG | YEAR | Open Postseason Leaderboard |
|---|---|---|---|---|
| 1 | Addie Joss* | .2519 | 1902-1910 | |
| 2 | Spud Chandler | .2539 | 1937-1952 | |
| 3 | Babe Adams* | .2618 | 1906-1926 | |
| 4 | Jumbo Brown | .2653 | 1926-1952 | |
| 5 | Jesse Tannehill | .2751 | 1894-1910 | |
| 6 | Max Lanier | .2821 | 1938-1951 | |
| 7 | Orval Overall | .2823 | 1905-1913 | |
| 8 | Bill Doak | .2917 | 1913-1929 | |
| 9 | Eddie Plank* | .2971 | 1901-1917 | |
| 10 | Cy Young* | .2990 | 1890-1911 | |
| 11 | Tiny Bonham | .2994 | 1940-1950 | |
| 11 | Hal Schumacher | .2994 | 1931-1947 | |
| 13 | Charley Root | .3091 | 1923-1940 | |
| 14 | Ed Brandt | .3171 | 1928-1950 | |
| 15 | Van Mungo# | .3196 | 1931-1954 | |
| 16 | Jesse Haines | .3207 | 1919-1938 | |
| 17 | Jeff Tesreau | .3314 | 1912-1918 | |
| 18 | Bill Hallahan | .3371 | 1926-1941 | |
| 19 | Jakie May | .3413 | 1918-1932 | |
| 20 | Satchel Paige | .3462 | 1927-1951 | |
| 21 | Charles Bender* | .3479 | 1903-1924 | |
| 22 | Herb Pennock | .3485 | 1912-1934 | |
| 23 | Gentry Jessup# | .3492 | 1940-1954 | |
| 24 | Christy Mathewson* | .3502 | 1900-1916 | |
| 25 | Rube Waddell* | .3528 | 1897-1910 | |
| 26 | Dutch Leonard | .3554 | 1913-1925 | |
| 27 | Deacon Phillippe | .3556 | 1899-1911 | |
| 28 | Jack Quinn | .3562 | 1909-1932 | |
| 29 | Mort Cooper | .3598 | 1938-1947 | |
| 30 | Barney Morris | .3603 | 1932-1947 | |
| 31 | Paul Derringer | .3609 | 1931-1952 | |
| 32 | Mordecai Brown* | .3624 | 1903-1916 | |
| 33 | Wilbur Cooper | .3646 | 1912-1926 | |
| 34 | Fred Toney | .3651 | 1914-1923 | |
| 35 | Red Ames* | .3720 | 1903-1919 | |
| 36 | Walter Johnson* | .3772 | 1907-1927 | |
| 37 | Curt Simmons# | .3831 | 1948-1954 | |
| 38 | Hank Borowy | .3858 | 1942-1948 | |
| 39 | Babe Ruth* | .3925 | 1914-1935 | |
| 40 | Joe Wood | .3955 | 1908-1922 | |
| 41 | Otto Hess | .3966 | 1902-1914 | |
| 42 | Tom Zachary | .4060 | 1920-1936 | |
| 43 | Hod Eller | .4133 | 1917-1920 | |
| 44 | Johnny Allen | .4143 | 1932-1942 | |
| 45 | Bill Bernhard | .4173 | 1899-1907 | |
| 46 | Waite Hoyt | .4197 | 1919-1944 | |
| 47 | Rube Marquard | .4291 | 1908-1925 | |
| 48 | Allie Reynolds# | .4346 | 1942-1954 | |
| 49 | Carl Hubbell* | .4358 | 1928-1948 | |
| 50 | Lefty Gomez | .4367 | 1930-1942 | |
| 51 | Jack Pfiester | .4397 | 1904-1911 | |
| 52 | Vean Gregg | .4574 | 1911-1925 | |
| 53 | Lefty Grove* | .4677 | 1925-1945 | |
| 54 | Sam Streeter | .4871 | 1921-1936 | |
| 55 | Al Hollingsworth | .5455 | 1935-1947 | |
| 56 | Dave Brown | .5600 | 1919-1925 |
