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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Roberto Hernández# | 1.050 | 2025-2042 | |
| 2 | Luis Solíz | 1.042 | 2015-2039 | |
| 2 | Enrique Santandreu# | 1.042 | 2033-2043 | |
| 4 | Raúl Rosário# | 1.039 | 2038-2042 | |
| 5 | Javier Gonzáles# | 1.031 | 2030-2042 | |
| 6 | Luis Sáenz | 1.030 | 2019-2035 | |
| 7 | Rodrigo Ferra | 1.016 | 2016-2034 | |
| 8 | Jesús Negrón# | 1.009 | 2027-2042 | |
| 9 | Alfredo Gómez | 1.008 | 2017-2037 | |
| 10 | Rafael Benítez# | 0.998 | 2031-2040 | |
| 11 | Francisco Cavazos | 0.995 | 2026-2040 | |
| 12 | Ramón Fernández# | 0.976 | 2023-2042 | |
| 13 | Felipe Díaz# | 0.957 | 2029-2043 |
