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| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Abel Kizzie# | 1.777 | 1881-1883 | |
| 2 | Jack Pendleton# | 1.916 | 1889-1890 | |
| 3 | Buster Scott | 2.127 | 1878-1885 | |
| 4 | Billy Roberson | 2.159 | 1879-1884 | |
| 5 | Elmer Manuel | 2.247 | 1879-1885 | |
| 6 | Samuel Schuyler | 2.409 | 1877-1879 | |
| 7 | Judson Perry | 2.431 | 1885-1887 | |
| 8 | Lou Scudder# | 2.487 | 1885-1889 | |
| 9 | Johnny Wallace | 2.525 | 1884-1887 | |
| 10 | Edgar Kirkpatrick# | 2.553 | 1880-1889 | |
| 11 | Dan LeBoeuf# | 2.645 | 1885-1888 | |
| 12 | Darren Kelly | 2.652 | 1876-1880 | |
| 13 | Herbert Thayer# | 2.673 | 1882-1890 | |
| 14 | Will Truitt# | 2.691 | 1884-1885 | |
| 15 | Cal Ames# | 2.720 | 1882-1889 | |
| 16 | Gus Schneider# | 2.763 | 1884-1890 | |
| 17 | Al Lynn# | 2.803 | 1882-1886 | |
| 18 | Martin Tucker | 2.832 | 1879-1885 | |
| 19 | Michael Pitchford | 2.846 | 1876-1882 | |
| 20 | Joe Cook | 2.859 | 1878-1884 | |
| 21 | Julius Tigner | 2.874 | 1876-1877 | |
| 21 | Heck Williams | 2.874 | 1876-1878 | |
| 23 | Ray Flowers# | 2.881 | 1886-1890 | |
| 24 | Joe Chastain# | 2.897 | 1887-1888 | |
| 25 | Joe Ashford# | 2.898 | 1888-1889 | |
| 26 | Pat Murphy# | 2.908 | 1876-1883 | |
| 27 | Billy Crutchfield | 2.909 | 1883-1888 | |
| 28 | Paul Kennett | 2.923 | 1876-1878 | |
| 29 | Lew Anthony | 2.928 | 1885-1889 | |
| 30 | Tommy Johnson | 2.938 | 1886-1888 | |
| 31 | Otto Hinz# | 2.944 | 1889-1890 | |
| 32 | Willie Davis | 2.990 | 1879-1885 | |
| 33 | Nate Chadwick# | 2.995 | 1881-1889 | |
| 34 | George Beal# | 3.003 | 1887-1888 | |
| 35 | Rufus Riddick# | 3.034 | 1878-1889 | |
| 36 | Jim Cannon | 3.055 | 1878-1887 | |
| 37 | Henry Page | 3.063 | 1880-1888 | |
| 38 | Otis OBrien# | 3.109 | 1881-1889 | |
| 39 | Will Ryan | 3.111 | 1876-1880 | |
| 40 | Ezra Lockhart# | 3.131 | 1879-1889 | |
| 41 | Daniel Fallow | 3.141 | 1876-1883 | |
| 42 | Herbert Crosby# | 3.144 | 1884-1885 | |
| 43 | George Shelton | 3.196 | 1883-1888 | |
| 44 | Lou Allerton# | 3.231 | 1877-1881 | |
| 45 | Walt Lopp# | 3.267 | 1880-1890 | |
| 46 | Herbert Vogel# | 3.278 | 1886-1890 | |
| 47 | Clyde Wilkes# | 3.291 | 1886-1889 | |
| 48 | Will Morrill# | 3.296 | 1884-1885 | |
| 49 | Henry Young | 3.335 | 1883-1890 | |
| 50 | David Atwood# | 3.342 | 1889-1890 | |
| 51 | Gene Wofford# | 3.381 | 1887-1889 | |
| 52 | Davey Hardy | 3.391 | 1887-1889 | |
| 53 | Ray Draper# | 3.392 | 1887-1889 | |
| 54 | Luther Smallwood | 3.401 | 1876-1882 | |
| 55 | Will Bullock | 3.426 | 1880-1886 | |
| 56 | Davey Clark | 3.508 | 1884-1885 | |
| 57 | Jack Ellsworth# | 3.541 | 1888-1890 | |
| 58 | Silas Lawton# | 3.549 | 1885-1890 | |
| 59 | Al McDonough# | 3.637 | 1887-1889 | |
| 60 | Jimmy Harewood | 3.739 | 1885-1887 | |
| 61 | Charley Reinhardt# | 3.757 | 1888-1889 | |
| 62 | Ed Fischer# | 3.864 | 1886-1889 | |
| 63 | Hiram Whitman# | 3.967 | 1879-1881 | |
| 64 | Len Darlington# | 4.039 | 1888-1890 | |
| 65 | Eugene Hobbs | 4.186 | 1888-1889 | |
| 66 | Herb Parker | 4.256 | 1886-1889 |
