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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Billy Hamilton* | .4705 | 1888-1901 | |
| 2 | Ty Cobb# | .4352 | 1905-1915 | |
| 3 | Roy Thomas | .4135 | 1899-1910 | |
| 4 | Tris Speaker# | .4113 | 1907-1915 | |
| 5 | Hugh Duffy* | .4020 | 1888-1905 | |
| 6 | George Van Haltren | .3876 | 1887-1903 | |
| 7 | Dummy Hoy | .3850 | 1888-1902 | |
| 8 | Jimmy Ryan | .3706 | 1885-1903 | |
| 9 | Jimmy Barrett | .3704 | 1899-1908 | |
| 10 | Steve Brodie | .3635 | 1890-1902 | |
| 11 | Charlie Hemphill | .3589 | 1899-1911 | |
| 12 | Sam Crawford# | .3587 | 1899-1915 | |
| 13 | Cy Seymour | .3541 | 1896-1913 | |
| 14 | Ginger Beaumont | .3531 | 1899-1910 | |
| 15 | Jim O'Rourke | .3502 | 1874-1893 | |
| 16 | Pete Hill# | .3415 | 1904-1915 | |
| 16 | Chick Stahl | .3415 | 1897-1906 | |
| 18 | Fielder Jones | .3397 | 1896-1908 | |
| 19 | Carlos Moran | .3387 | 1899-1915 | |
| 20 | Tom McCreery | .3366 | 1895-1903 | |
| 21 | Jimmy Slagle | .3326 | 1899-1908 | |
| 22 | Clyde Milan# | .3306 | 1907-1915 | |
| 23 | Emmet Heidrick | .3303 | 1898-1908 | |
| 24 | Spottswood Poles# | .3294 | 1909-1915 | |
| 25 | Homer Smoot | .3263 | 1902-1906 | |
| 26 | Ashby Dunbar# | .3254 | 1906-1915 | |
| 27 | Jimmy McAleer | .3227 | 1889-1906 | |
| 28 | Harry Bay | .3161 | 1901-1908 | |
| 29 | John Dobbs | .3111 | 1901-1905 | |
| 30 | Rebel Oakes | .3011 | 1909-1913 | |
| 31 | Shano Collins# | .2984 | 1910-1915 | |
| 32 | Al Burch | .2896 | 1906-1911 |
