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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Eb Hartog# | .4620 | 1955 | |
| 2 | Eb Hartog# | .4169 | 1954 | |
| 3 | Otte van Baardewijk# | .4164 | 1956 | |
| 4 | Bret Haskell# | .3931 | 1957 | |
| 5 | Finn Haarhuis# | .3906 | 1956 | |
| 6 | Motka Davletkildeev# | .3849 | 1952 | |
| 7 | Gene Hills | .3715 | 1952 | |
| 8 | Haruyoshi Chikasuye# | .3707 | 1956 | |
| 9 | Motka Davletkildeev# | .3692 | 1953 | |
| 10 | Juan Montemayor# | .3643 | 1957 | |
| 11 | Zach Warren# | .3630 | 1958 | |
| 12 | Eb Hartog# | .3501 | 1957 | |
| 13 | Jose Zubiate# | .3258 | 1957 | |
| 14 | Otte van Baardewijk# | .3043 | 1954 | |
| 15 | Al Briones# | .3037 | 1958 | |
| 16 | Otte van Baardewijk# | .2950 | 1955 |
