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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Bjorn Haas# | .4550 | 1953 | |
| 2 | Roald Langstraat# | .4444 | 1955 | |
| 3 | Zivota Nemanjic | .4379 | 1952 | |
| 4 | Dominik Young# | .4348 | 1955 | |
| 5 | Ryan Hutto# | .4333 | 1954 | |
| 6 | Andino Donatello# | .4140 | 1952 | |
| 7 | Mike Strauss# | .4136 | 1953 | |
| 8 | Roger Tomei# | .4132 | 1955 | |
| 9 | Milos Govedarica# | .4085 | 1952 | |
| 10 | Christofferson Crumlin# | .3993 | 1954 | |
| 11 | Efraim Elfring# | .3979 | 1954 | |
| 12 | Harold Martindale# | .3934 | 1952 | |
| 13 | Mario Villa# | .3884 | 1955 | |
| 14 | Mario Orellana# | .3863 | 1953 | |
| 15 | Patrick Woods# | .3852 | 1954 | |
| 16 | Tristan Rio# | .3810 | 1955 | |
| 17 | Erik Eichler# | .3782 | 1952 | |
| 18 | Arman Igumentsev# | .3768 | 1953 | |
| 19 | Harry Bassler# | .3730 | 1953 | |
| 20 | Dan Cole# | .3714 | 1953 | |
| 21 | Jared Allison# | .3708 | 1953 | |
| 22 | Norman May | .3646 | 1953 | |
| 23 | Enea Rubbi# | .3627 | 1952 | |
| 24 | Harry Bassler# | .3545 | 1952 | |
| 25 | Yi-ke Sun# | .3508 | 1953 | |
| 26 | Kevin Riddick# | .3383 | 1952 | |
| 27 | Dominik Young# | .3354 | 1954 | |
| 28 | Bob Curran | .3046 | 1954 |
