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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Pete Kingsbury# | .5069 | 1900 | |
| 2 | Will Marsh# | .4960 | 1890 | |
| 3 | Pete Kingsbury# | .4926 | 1898 | |
| 4 | Pete Kingsbury# | .4914 | 1896 | |
| 5 | Pete Kingsbury# | .4836 | 1894 | |
| 6 | Will Marsh# | .4715 | 1896 | |
| 7 | Pete Kingsbury# | .4706 | 1901 | |
| 8 | Pete Kingsbury# | .4646 | 1893 | |
| 9 | Will Marsh# | .4607 | 1895 | |
| 10 | Will Marsh# | .4560 | 1897 | |
| 10 | Pete Kingsbury# | .4560 | 1899 | |
| 12 | Pete Kingsbury# | .4500 | 1903 | |
| 13 | Pete Kingsbury# | .4466 | 1895 | |
| 14 | Will Marsh# | .4402 | 1899 | |
| 15 | Pete Kingsbury# | .4394 | 1904 | |
| 16 | Will Marsh# | .4390 | 1894 | |
| 17 | Pete Kingsbury# | .4347 | 1906 | |
| 18 | Will Marsh# | .4299 | 1891 | |
| 19 | Ed Moffitt | .4292 | 1883 | |
| 20 | Roger Frace | .4271 | 1876 | |
| 21 | George Maroney | .4257 | 1894 | |
| 22 | Ed Dietrich# | .4246 | 1898 | |
| 23 | Will Marsh# | .4204 | 1902 | |
| 24 | Pete Kingsbury# | .4189 | 1902 | |
| 25 | George Maroney | .4170 | 1895 | |
| 26 | Pete Kingsbury# | .4123 | 1905 | |
| 27 | Will Marsh# | .4108 | 1893 | |
| 28 | Will Marsh# | .4095 | 1898 | |
| 29 | Cal Hoffmann | .4035 | 1882 | |
| 30 | Ed Dietrich# | .4010 | 1901 | |
| 31 | Charlie Dozier | .4005 | 1879 | |
| 32 | George Maroney | .4004 | 1897 | |
| 33 | Alfred Dwyer | .3980 | 1894 | |
| 34 | Elmer Sparks | .3966 | 1895 | |
| 35 | Ed Dietrich# | .3902 | 1900 | |
| 36 | Pete Kingsbury# | .3899 | 1907 | |
| 37 | Ed Moffitt | .3896 | 1881 | |
| 38 | Dan Mitchell | .3875 | 1889 | |
| 39 | Ed Dietrich# | .3869 | 1905 | |
| 40 | Paul Bell | .3833 | 1878 | |
| 41 | Ed Dietrich# | .3826 | 1903 | |
| 42 | George Maroney | .3825 | 1893 | |
| 43 | Ed Dietrich# | .3799 | 1902 | |
| 44 | John Cheatom | .3756 | 1877 | |
| 45 | Ed Dietrich# | .3725 | 1899 | |
| 46 | Alfred Dwyer | .3724 | 1895 | |
| 47 | George Maroney | .3721 | 1900 | |
| 48 | Gene Neumann# | .3719 | 1905 | |
| 49 | Alfred Dwyer | .3710 | 1897 | |
| 50 | Herbert Simpson | .3695 | 1893 | |
| 51 | Elmer Sparks | .3690 | 1890 | |
| 52 | Rufus Smiley | .3684 | 1879 | |
| 53 | John Underwood# | .3680 | 1905 | |
| 54 | Elmer Sparks | .3677 | 1894 | |
| 55 | Al Sanderson | .3673 | 1878 | |
| 56 | Dan Moriarty | .3672 | 1893 | |
| 57 | Ed Dietrich# | .3670 | 1904 | |
| 58 | Dan Moriarty | .3665 | 1894 | |
| 59 | Will Hobbs | .3663 | 1893 | |
| 59 | George Maroney | .3663 | 1898 | |
| 61 | Edgar Woodard | .3629 | 1897 | |
| 61 | Frank Daniels | .3629 | 1887 | |
| 63 | John Underwood# | .3628 | 1904 | |
| 64 | Ed Moffitt | .3627 | 1882 | |
| 65 | Edgar Woodard | .3623 | 1889 | |
| 66 | John Underwood# | .3620 | 1907 | |
| 67 | David Hudson | .3609 | 1895 | |
| 68 | Milton Rinck# | .3587 | 1906 | |
| 69 | John Underwood# | .3583 | 1906 | |
| 70 | Will Hobbs | .3576 | 1897 | |
| 71 | Frank Hampton | .3573 | 1895 | |
| 72 | Hiram Neely | .3566 | 1879 | |
| 73 | Elmer Sparks | .3563 | 1896 | |
| 74 | Milton Rinck# | .3539 | 1905 | |
| 75 | Alfred Dwyer | .3532 | 1899 | |
| 76 | David Hudson | .3530 | 1896 | |
| 77 | George Maroney | .3519 | 1902 | |
| 78 | Will Hobbs | .3514 | 1899 | |
| 79 | Alfred Dwyer | .3511 | 1893 | |
| 79 | Alfred Dwyer | .3511 | 1898 | |
| 81 | Mickey Dahlberg# | .3510 | 1907 | |
| 82 | Bob Wilhoit# | .3509 | 1903 | |
| 83 | David Hudson | .3505 | 1900 | |
| 84 | Elmer Sparks | .3500 | 1891 | |
| 85 | Denny Reardon | .3483 | 1896 | |
| 86 | Cal Hoffmann | .3472 | 1889 | |
| 87 | Tom Sidberry | .3469 | 1889 | |
| 88 | Alfred Dwyer | .3464 | 1902 | |
| 89 | George Maroney | .3463 | 1891 | |
| 89 | Milton Rinck# | .3463 | 1904 | |
| 91 | Bob Wilhoit# | .3459 | 1902 | |
| 92 | Milton Rinck# | .3452 | 1907 | |
| 93 | David Hudson | .3451 | 1893 | |
| 94 | Elmer Sparks | .3449 | 1893 | |
| 95 | Frank Hampton | .3436 | 1896 | |
| 96 | Denny Reardon | .3434 | 1891 | |
| 96 | George Maroney | .3434 | 1899 | |
| 98 | Dan Moriarty | .3423 | 1895 | |
| 99 | Dan Moriarty | .3418 | 1890 | |
| 100 | Cal Hoffmann | .3405 | 1884 |
