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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Johnny Foley# | .4036 | 2030 | |
| 2 | Francisco Ríos | .3989 | 2030 | |
| 3 | Javier Robles# | .3918 | 2037 | |
| 4 | Bill Becker | .3796 | 2032 | |
| 5 | Dwight Hill# | .3715 | 2032 | |
| 6 | Cliff Long# | .3699 | 2034 | |
| 7 | Bill Becker | .3688 | 2031 | |
| 8 | Greg Powers# | .3649 | 2037 | |
| 9 | Ira Carson# | .3636 | 2036 | |
| 10 | Tony Chávez# | .3627 | 2031 | |
| 11 | Alexander Randolph# | .3418 | 2033 | |
| 12 | Wes Britton | .3373 | 2030 | |
| 13 | Collin Gallagher# | .3366 | 2038 | |
| 14 | Iván Ramírez# | .3318 | 2038 | |
| 15 | Roger Branstetter# | .3242 | 2038 | |
| 16 | Fletcher Caldwell# | .3199 | 2035 | |
| 17 | Juan Aguirre# | .3190 | 2036 | |
| 18 | Carlos Lucero# | .3161 | 2037 | |
| 19 | Rodrigo Flores | .3133 | 2032 | |
| 20 | Gabriel Parra# | .3118 | 2036 | |
| 21 | Rodrigo Flores | .3080 | 2033 | |
| 22 | Alejandro Ayala# | .2913 | 2036 | |
| 23 | Manny López# | .2910 | 2031 | |
| 24 | Pedro Alemán# | .2740 | 2038 |
