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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Sigurd Nilsson# | .3966 | 1931-1933 | |
| 2 | Toni Similä# | .3872 | 1931-1933 | |
| 3 | Reko Häyrynen# | .3794 | 1931-1933 | |
| 4 | Trevor Horelica# | .3549 | 1932-1933 | |
| 5 | Oskari Eklund# | .3396 | 1931-1933 | |
| 6 | Hiski Hänninen# | .3298 | 1931-1932 | |
| 7 | Ilmo Hakanen# | .3162 | 1931-1933 | |
| 8 | Daniel Veteläinen# | .3131 | 1931-1933 | |
| 9 | Dave Vega# | .3124 | 1932-1933 | |
| 10 | Terjo Kallio# | .3071 | 1931-1933 | |
| 11 | Charles Agyiri# | .2922 | 1931-1932 | |
| 12 | Tommy Karlsson# | .2839 | 1931-1933 | |
| 13 | Ernie Santizo# | .2788 | 1932-1933 | |
| 14 | Jussi Koiranen# | .2715 | 1931-1933 |
