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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Esa Haverinen# | .3817 | 1933 | |
| 2 | Håkan Suonperä# | .3608 | 1931 | |
| 3 | Nils Korkia-aho# | .3477 | 1933 | |
| 4 | Nils Korkia-aho# | .3381 | 1932 | |
| 5 | Jimi Ali# | .3353 | 1931 | |
| 6 | Yago Figueiredo# | .3339 | 1933 | |
| 7 | William Hon# | .3060 | 1933 |
