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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Harvey Keller# | .5785 | 1956 | |
| 2 | Bjorn Haas# | .4550 | 1953 | |
| 3 | Bernard Blondel# | .4492 | 1958 | |
| 4 | Roald Langstraat# | .4444 | 1955 | |
| 5 | Zivota Nemanjic | .4379 | 1952 | |
| 6 | Dominik Young# | .4348 | 1955 | |
| 7 | Ryan Hutto# | .4333 | 1954 | |
| 8 | Louwe Simon# | .4240 | 1956 | |
| 9 | Myles Williams# | .4167 | 1957 | |
| 10 | Josiah Bray# | .4159 | 1958 | |
| 11 | Andino Donatello# | .4140 | 1952 | |
| 12 | Mike Strauss | .4136 | 1953 | |
| 13 | Roger Tomei | .4132 | 1955 | |
| 14 | Mauricio Pena# | .4098 | 1957 | |
| 15 | Milos Govedarica | .4085 | 1952 | |
| 16 | Jim Kirshenbaum# | .4050 | 1958 | |
| 17 | Ross Davey# | .4017 | 1958 | |
| 18 | Christofferson Crumlin | .3993 | 1954 | |
| 19 | Efraim Elfring# | .3979 | 1954 | |
| 20 | Harold Martindale | .3934 | 1952 | |
| 21 | Mario Villa# | .3884 | 1955 | |
| 22 | Mario Orellana | .3863 | 1953 | |
| 23 | Patrick Woods# | .3852 | 1954 | |
| 24 | Tristan Rio# | .3810 | 1955 | |
| 25 | Erik Eichler | .3782 | 1952 | |
| 26 | Arman Igumentsev# | .3768 | 1953 | |
| 27 | Harry Bassler | .3730 | 1953 | |
| 28 | Dan Cole# | .3714 | 1953 | |
| 29 | Jared Allison | .3708 | 1953 | |
| 30 | Norman May | .3646 | 1953 | |
| 31 | Enea Rubbi | .3627 | 1952 | |
| 32 | Harry Bassler | .3545 | 1952 | |
| 33 | Yi-ke Sun | .3508 | 1953 | |
| 34 | Kevin Riddick | .3383 | 1952 | |
| 35 | Dominik Young# | .3354 | 1954 | |
| 36 | Bob Curran | .3046 | 1954 |
