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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Vicente Torrez | 1.023 | 1963-1967 | |
| 2 | Hilario Palma | 1.022 | 1941-1945 | |
| 3 | Dewey Ortíz | 1.018 | 1975-1986 | |
| 4 | Pedro Villegas | 1.007 | 1937-1941 | |
| 5 | Tony Daniel | 0.991 | 1958-1962 | |
| 6 | Donnie Taylor | 0.927 | 1957-1960 |
