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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Franklin Wouters# | .4149 | 1956 | |
| 2 | Sean Sulima# | .4012 | 1958 | |
| 3 | Franklin Wouters# | .3941 | 1957 | |
| 4 | Tim Pond# | .3923 | 1955 | |
| 5 | Jared Johnston# | .3881 | 1958 | |
| 6 | Dan Duncan# | .3817 | 1953 | |
| 7 | Josh Horlick# | .3781 | 1955 | |
| 8 | Bryan Peden# | .3779 | 1955 | |
| 9 | Yoichi Ito# | .3669 | 1956 | |
| 10 | Giulio Pisa# | .3595 | 1956 | |
| 11 | Alexis Colas# | .3571 | 1957 | |
| 12 | Ramiro Salas# | .3498 | 1957 | |
| 13 | Fedor Beck# | .3497 | 1958 | |
| 14 | Féilim Graham# | .3492 | 1957 | |
| 15 | Geoffrey Claassen# | .3477 | 1956 | |
| 16 | Phil White# | .3447 | 1956 | |
| 17 | Byung-sik Han# | .3444 | 1958 | |
| 18 | Nick Gilgore# | .3399 | 1958 | |
| 19 | Bill Levine# | .3384 | 1955 | |
| 20 | Fergus Harris# | .3322 | 1952 | |
| 21 | Jan Danielsson# | .3312 | 1953 | |
| 22 | Georges Cariou# | .3308 | 1958 | |
| 22 | Josh Horlick# | .3308 | 1954 | |
| 24 | Phil Anderson | .3230 | 1952 | |
| 25 | Jan Danielsson# | .3146 | 1952 | |
| 26 | Branislav Kordic# | .3122 | 1954 |
