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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Alfred Mercier# | .4603 | 1887 | |
| 2 | Fred Lorraine# | .4483 | 1886 | |
| 3 | Alfred Mercier# | .4219 | 1888 | |
| 4 | Will Kuehn# | .4205 | 1890 | |
| 5 | George Dietrich# | .4176 | 1887 | |
| 6 | Walt Harkness# | .4083 | 1886 | |
| 7 | Charley Keeler# | .3954 | 1890 | |
| 8 | Will Kuehn# | .3945 | 1889 | |
| 9 | Will Kuehn# | .3919 | 1887 | |
| 10 | Walt Harkness# | .3876 | 1888 | |
| 11 | Roy Becker# | .3862 | 1883 | |
| 12 | John Bates | .3794 | 1882 | |
| 13 | Alfred Mercier# | .3753 | 1885 | |
| 14 | Lew Schroeder# | .3748 | 1886 | |
| 15 | Otis Watters# | .3740 | 1886 | |
| 16 | Ben Hyde# | .3633 | 1889 | |
| 17 | Alfred Charbonneau# | .3625 | 1890 | |
| 18 | Bob Perry# | .3594 | 1890 | |
| 19 | Charley Keeler# | .3571 | 1889 | |
| 20 | Lou Kerr# | .3569 | 1884 | |
| 21 | George Ellis | .3538 | 1886 | |
| 22 | George Dietrich# | .3519 | 1889 | |
| 23 | Clar Malloy# | .3491 | 1890 | |
| 24 | Dave Greenblatt | .3470 | 1886 | |
| 25 | Frederic Kennedy | .3467 | 1882 | |
| 26 | Clar Schultz# | .3429 | 1889 | |
| 27 | Nate Locke# | .3372 | 1888 | |
| 28 | Ray Hayden# | .3340 | 1887 | |
| 29 | George Maroney# | .3338 | 1887 | |
| 30 | Joe Foster | .3317 | 1888 | |
| 31 | Wilbur Jordan | .3303 | 1882 | |
| 32 | Ben Hyde# | .3284 | 1890 | |
| 33 | Nate Locke# | .3257 | 1887 | |
| 34 | Nate Locke# | .3228 | 1883 | |
| 35 | Otis Watters# | .3204 | 1884 | |
| 36 | Tommy Milligan | .3203 | 1887 | |
| 37 | Abraham Martin | .3149 | 1889 | |
| 38 | Alfred Marks# | .3135 | 1884 | |
| 39 | Dave Greenblatt | .3120 | 1884 | |
| 39 | Will Kuehn# | .3120 | 1888 | |
| 41 | Walt Harkness# | .3101 | 1889 | |
| 42 | Dave Greenblatt | .3090 | 1885 | |
| 43 | Charley Vinton# | .3062 | 1888 | |
| 44 | Ben Hyde# | .2998 | 1887 | |
| 45 | Lew Schroeder# | .2980 | 1885 | |
| 46 | Otis Watters# | .2964 | 1885 | |
| 47 | Jack Rawlins# | .2962 | 1883 | |
| 48 | Charley Lucas# | .2931 | 1889 | |
| 49 | Lou Kerr# | .2925 | 1883 | |
| 50 | Danny Leary | .2916 | 1884 | |
| 51 | Vic VanAlstyne# | .2898 | 1890 | |
| 52 | Vic VanAlstyne# | .2894 | 1885 | |
| 53 | Pat Hopkins# | .2831 | 1890 | |
| 54 | Vic VanAlstyne# | .2771 | 1883 | |
| 55 | Ernest Hathaway# | .2731 | 1886 | |
| 56 | George Dietrich# | .2676 | 1888 | |
| 57 | Ben Hyde# | .2646 | 1886 | |
| 58 | Johnny King | .2487 | 1883 | |
| 59 | Vic VanAlstyne# | .2456 | 1882 | |
| 60 | Hiram Neely# | .2444 | 1883 | |
| 61 | Oscar Foster# | .2434 | 1884 | |
| 62 | Frederic Kennedy | .2432 | 1884 | |
| 63 | Tim Clements | .2399 | 1884 | |
| 64 | Nate Vaughn# | .2365 | 1882 | |
| 65 | Hugh Harley | .2345 | 1885 | |
| 66 | Lew Colman# | .2344 | 1882 |
