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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Joe Robertson# | .4408 | 2038 | |
| 2 | William Morgan# | .4248 | 2032 | |
| 3 | Dietmar Beich# | .4006 | 2036 | |
| 4 | Luis Sotelo# | .3949 | 2030 | |
| 5 | Rob Brady# | .3901 | 2028 | |
| 6 | Al Miller | .3882 | 2028 | |
| 7 | Bill Anderson# | .3846 | 2034 | |
| 8 | Brad Smith# | .3780 | 2034 | |
| 9 | Yan Gosselin# | .3770 | 2034 | |
| 10 | Jim Scott# | .3757 | 2036 | |
| 11 | Juan Ortega# | .3580 | 2031 | |
| 12 | Yan Gosselin# | .3522 | 2033 | |
| 13 | Mario García# | .3483 | 2036 | |
| 14 | Tommy Smith# | .3478 | 2030 | |
| 15 | Raúl Mejía# | .3464 | 2035 | |
| 16 | William Morgan# | .3425 | 2031 | |
| 17 | Octávio Flores# | .3387 | 2033 | |
| 18 | Lorenzo Rodríguez# | .3379 | 2033 | |
| 19 | Manuel Cintrón# | .3333 | 2030 | |
| 20 | António Rodríguez# | .3258 | 2036 | |
| 21 | Jon Fabián# | .3201 | 2036 | |
| 22 | Ramón Sánchez# | .3161 | 2037 | |
| 23 | Manuel Cintrón# | .3149 | 2029 | |
| 24 | George Green | .3108 | 2028 | |
| 25 | Millard Evans# | .3054 | 2035 |
