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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Edilberto Almonte | 1.110 | 1960-1969 | |
| 2 | Matt Austen | 1.091 | 1937-1948 | |
| 3 | Adrián Antúnez | 1.078 | 1960-1967 | |
| 4 | António Salecdo | 1.057 | 1917-1926 | |
| 5 | James Moggs | 1.053 | 1922-1924 | |
| 6 | Ramón García | 1.041 | 1957-1968 | |
| 7 | Héctor Martínez | 1.021 | 1975-1989 | |
| 8 | Warren Lilly# | 1.013 | 1982-1990 | |
| 9 | Sven Kobes# | 0.955 | 1984-1991 | |
| 10 | Alfredo Cruz | 0.935 | 1955-1961 |
