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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Huibert van Duren# | .3568 | 1954-1959 | |
| 2 | Jorge Lopez# | .3474 | 1953-1958 | |
| 3 | Gökberk Erol# | .3465 | 1957-1959 | |
| 4 | Kazu Nakanishi# | .3441 | 1952-1959 | |
| 5 | Li-xue Da# | .3437 | 1953-1959 | |
| 6 | Josh Parker | .3313 | 1952-1954 | |
| 7 | Josh Lewis | .3257 | 1952-1954 | |
| 8 | Joe Brewer# | .3234 | 1952-1959 | |
| 9 | Roger Guillet# | .3228 | 1954-1959 | |
| 10 | Girolamo Iuliano# | .3179 | 1952-1959 | |
| 11 | Byron Ward | .3161 | 1952-1956 | |
| 12 | Donato Marciano# | .3150 | 1952-1959 | |
| 13 | Harry Cook# | .3143 | 1952-1959 | |
| 14 | Kei Kamiya# | .3105 | 1954-1959 | |
| 15 | Trevor Walker# | .3080 | 1956-1959 | |
| 16 | Jon Olson# | .2781 | 1952-1959 |
