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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Philippe Gonçalves# | .4202 | 1954 | |
| 2 | Alje Rodriguez# | .4110 | 1957 | |
| 3 | Warren Flemming# | .3863 | 1955 | |
| 4 | Jacob Billups | .3821 | 1952 | |
| 5 | Darrell Keereweer# | .3804 | 1958 | |
| 6 | George Montagnino# | .3691 | 1957 | |
| 7 | Jemke Claessens# | .3659 | 1957 | |
| 8 | Gero Zimmerman# | .3646 | 1953 | |
| 9 | J.P. Wood# | .3578 | 1952 | |
| 10 | Ludo Godori# | .3457 | 1954 | |
| 11 | Warren Flemming# | .3405 | 1954 | |
| 12 | Ivan Martinez# | .3158 | 1953 | |
| 13 | Ludo Godori# | .3132 | 1955 |
