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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Bobby Field | .3912 | 1953-1956 | |
| 2 | Bernardino Borsellino# | .3725 | 1954-1957 | |
| 3 | Geert Heinrich# | .3718 | 1954-1956 | |
| 4 | Jose Nunez# | .3602 | 1952-1955 | |
| 5 | Moritz van der Zalm# | .3361 | 1953-1957 | |
| 6 | Georgs Aguzzi# | .3038 | 1953-1959 |
