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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Mark Oestreich# | .4763 | 1981 | |
| 2 | Luis Rivera# | .4541 | 1981 | |
| 3 | Dennis Sherrill# | .4207 | 1981 | |
| 4 | Wayne Simmons# | .4078 | 1981 | |
| 5 | Robert Benda# | .2356 | 1981 |
