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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OOPS | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Mordecai Brown# | .4506 | 1908 | |
| 2 | Gus Weyhing | .4621 | 1888 | |
| 3 | Ed Walsh# | .4688 | 1908 | |
| 4 | Jose Mendez# | .4689 | 1907 | |
| 5 | Mordecai Brown# | .4750 | 1906 | |
| 6 | Mordecai Brown# | .4759 | 1909 | |
| 7 | Cy Young | .4892 | 1892 | |
| 8 | Amos Rusie | .4982 | 1892 | |
| 9 | Elmer Smith | .5008 | 1888 | |
| 10 | Jack Chesbro | .5009 | 1903 | |
| 10 | Jack Pfiester | .5009 | 1906 | |
| 12 | Ed Walsh# | .5015 | 1910 | |
| 13 | Rube Vickers | .5023 | 1907 | |
| 14 | Addie Joss | .5027 | 1906 | |
| 15 | Harry Howell | .5039 | 1905 | |
| 16 | Kid Nichols* | .5072 | 1898 | |
| 17 | Al Maul | .5156 | 1898 | |
| 18 | Addie Joss | .5164 | 1907 | |
| 19 | Amos Rusie | .5173 | 1891 | |
| 20 | Amos Rusie | .5174 | 1890 | |
| 21 | Jack Chesbro | .5190 | 1905 | |
| 22 | Addie Joss | .5201 | 1909 | |
| 23 | Frank Foreman | .5209 | 1889 | |
| 24 | Christy Mathewson# | .5210 | 1905 | |
| 25 | Walter Johnson# | .5214 | 1913 | |
| 25 | Ed Walsh# | .5214 | 1906 | |
| 25 | Harry Howell | .5214 | 1904 | |
| 28 | Charles Bender# | .5229 | 1908 | |
| 29 | Charles Bender# | .5232 | 1909 | |
| 30 | Elmer Smith | .5241 | 1887 | |
| 31 | Howie Camnitz | .5262 | 1908 | |
| 32 | Gus Weyhing | .5268 | 1892 | |
| 33 | Kid Nichols* | .5273 | 1890 | |
| 34 | Rube Waddell | .5287 | 1904 | |
| 35 | Kid Nichols* | .5289 | 1904 | |
| 36 | Jack Pfiester | .5291 | 1909 | |
| 37 | Addie Joss | .5294 | 1908 | |
| 38 | George Cuppy | .5299 | 1892 | |
| 39 | Rube Waddell | .5314 | 1900 | |
| 40 | Joe Williams# | .5327 | 1909 | |
| 41 | Christy Mathewson# | .5330 | 1904 | |
| 42 | Walter Johnson# | .5332 | 1909 | |
| 43 | Bert Cunningham | .5336 | 1888 | |
| 44 | Howie Camnitz | .5352 | 1910 | |
| 45 | Pol Perritt# | .5356 | 1914 | |
| 46 | Tully Sparks | .5361 | 1905 | |
| 46 | Christy Mathewson# | .5361 | 1908 | |
| 48 | Kid Nichols* | .5370 | 1892 | |
| 49 | Christy Mathewson# | .5372 | 1909 | |
| 50 | Ed Walsh# | .5373 | 1907 | |
| 51 | Jose Mendez# | .5378 | 1908 | |
| 52 | Addie Joss | .5379 | 1902 | |
| 53 | Doc White | .5381 | 1905 | |
| 54 | Vic Willis | .5385 | 1899 | |
| 54 | Noodles Hahn | .5385 | 1899 | |
| 56 | Noodles Hahn | .5388 | 1902 | |
| 57 | Orval Overall | .5392 | 1907 | |
| 58 | Doc McJames | .5405 | 1898 | |
| 59 | Bob Ewing | .5406 | 1907 | |
| 60 | Bob Ewing | .5409 | 1904 | |
| 61 | Norwood Gibson | .5423 | 1904 | |
| 62 | Clark Griffith | .5424 | 1898 | |
| 63 | Addie Joss | .5460 | 1903 | |
| 63 | Fred Glade | .5460 | 1904 | |
| 65 | Tully Sparks | .5468 | 1906 | |
| 66 | George Winter | .5470 | 1908 | |
| 67 | Jack Chesbro | .5472 | 1907 | |
| 68 | Jake Weimer | .5473 | 1907 | |
| 68 | Gus Weyhing | .5473 | 1889 | |
| 70 | Frank Smith | .5484 | 1908 | |
| 71 | Addie Joss | .5485 | 1905 | |
| 72 | Kid Nichols* | .5501 | 1905 | |
| 73 | Kid Gleason | .5504 | 1890 | |
| 74 | Win Kellum | .5506 | 1904 | |
| 75 | Ed Walsh# | .5508 | 1912 | |
| 75 | Cy Young | .5508 | 1904 | |
| 77 | Orval Overall | .5509 | 1910 | |
| 78 | Alex Jones | .5513 | 1892 | |
| 79 | Addie Joss | .5516 | 1904 | |
| 80 | Ted Lewis | .5520 | 1898 | |
| 81 | Ed Reulbach# | .5527 | 1905 | |
| 82 | Bill Dinneen | .5528 | 1902 | |
| 83 | Lefty Leifield# | .5532 | 1908 | |
| 84 | Claude Hendrix# | .5533 | 1911 | |
| 85 | Lefty Leifield# | .5536 | 1907 | |
| 86 | Jack Pfiester | .5537 | 1907 | |
| 86 | Ed Walsh# | .5537 | 1905 | |
| 86 | Christy Mathewson# | .5537 | 1902 | |
| 89 | Ed Walsh# | .5546 | 1909 | |
| 90 | Glenn Liebhardt | .5547 | 1906 | |
| 91 | Red Ames# | .5553 | 1905 | |
| 91 | Lefty Leifield# | .5553 | 1906 | |
| 93 | Heinie Berger | .5557 | 1908 | |
| 94 | Otto Hess# | .5568 | 1906 | |
| 95 | Fred Glade | .5569 | 1905 | |
| 96 | Jay Hughes | .5571 | 1898 | |
| 97 | Ed Walsh# | .5576 | 1911 | |
| 98 | Orval Overall | .5580 | 1908 | |
| 99 | Jose Mendez# | .5582 | 1909 | |
| 100 | Gus Weyhing | .5584 | 1891 |
