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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Otto Korkeamäki# | 1.023 | 1933 | |
| 2 | Aki Böling# | 1.018 | 1933 | |
| 3 | Elo Niemi# | 1.016 | 1933 | |
| 4 | Paavo Grönroos# | 1.013 | 1933 | |
| 4 | Joe Kinnunen# | 1.013 | 1933 | |
| 6 | Solomon Danielson# | 1.002 | 1933 | |
| 7 | Veikko Outinen# | 0.986 | 1933 | |
| 8 | Jonathan Törmäkangas# | 0.984 | 1933 | |
| 9 | Niklas Möller# | 0.979 | 1933 | |
| 9 | Anatoli Jönsson# | 0.979 | 1933 |
