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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Wei-hong Shao# | .4238 | 1952-1959 | |
| 2 | Jon Maas# | .4143 | 1957-1959 | |
| 3 | Eric Snow# | .4022 | 1952-1959 | |
| 4 | Zaccaria Cartellieri# | .3686 | 1952-1959 | |
| 5 | Owen Bond# | .3672 | 1952-1959 | |
| 6 | Jesus Medina# | .3620 | 1952-1956 | |
| 7 | Mike O'Shea# | .3396 | 1952-1959 | |
| 8 | Jon Bertelson# | .3390 | 1956-1959 | |
| 9 | Kazu Nakanishi# | .3320 | 1952-1959 | |
| 10 | Bill Purkis# | .3203 | 1954-1958 | |
| 11 | Kai Coles# | .3194 | 1952-1958 | |
| 12 | Daniel Martin# | .3124 | 1952-1958 | |
| 13 | Josh Cutsail# | .2974 | 1952-1957 | |
| 14 | Trace Newman# | .2736 | 1952-1958 |
