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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Toni Egberg# | .3853 | 1931-1933 | |
| 2 | Håkan Suonperä# | .3442 | 1931-1933 | |
| 3 | Keke Nuutinen# | .3343 | 1931-1933 | |
| 3 | William Hon# | .3343 | 1931-1933 | |
| 5 | Hannes Ranne# | .3328 | 1931-1933 | |
| 6 | Timo Yrjänäinen# | .3313 | 1931-1933 | |
| 7 | Aleksei Ruth# | .3114 | 1931-1933 | |
| 8 | Jerker Oijusluoma# | .3078 | 1931-1933 | |
| 9 | Timo Laanti# | .2909 | 1931-1932 | |
| 10 | Jari-Pekka Esselström# | .2838 | 1932-1933 | |
| 11 | Igor Vilppunen# | .2691 | 1932-1933 |
