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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Bill Hassamaer | .3645 | 1901-1908 | |
| 2 | Sam Crawford# | .3606 | 1899-1913 | |
| 3 | Jesse Burkett | .3599 | 1903-1912 | |
| 4 | Mike Donlin# | .3598 | 1899-1913 | |
| 5 | Mike Griffin | .3561 | 1901-1910 | |
| 6 | Dan McGann# | .3537 | 1904-1913 | |
| 7 | Bob Caruthers | .3506 | 1904-1908 | |
| 8 | Ed McKean | .3505 | 1901-1909 | |
| 9 | Tim Jordan# | .3481 | 1901-1913 | |
| 10 | Billy Earle | .3467 | 1901-1911 | |
| 11 | Otto Schomberg | .3432 | 1901-1909 | |
| 12 | Bug Holliday# | .3407 | 1901-1913 | |
| 13 | Tommy Tucker | .3289 | 1901-1908 | |
| 14 | Ed Delahanty# | .3254 | 1903-1913 | |
| 15 | Jiggs Donahue | .3232 | 1900-1906 | |
| 16 | Ace Stewart# | .3179 | 1904-1910 | |
| 17 | Nap Lajoie# | .3152 | 1904-1913 |
