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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | She Ruan | 1.127 | 1976-1985 | |
| 2 | Alejandro García# | 1.091 | 1986-1990 | |
| 3 | Stan Rainey | 1.087 | 1911-1916 | |
| 4 | José Gonzáles | 1.080 | 1957-1961 | |
| 5 | Rob Dickson | 1.015 | 1975-1977 | |
| 6 | Gustavo Estorga | 0.986 | 1924-1928 | |
| 7 | Miguel Castro | 0.971 | 1917-1920 |
