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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jorge Méndez | 1.137 | 1921-1924 | |
| 2 | Mark Paul | 1.092 | 1935-1937 | |
| 3 | Harry Jowett | 1.032 | 1913-1919 | |
| 4 | Bob Gaillard | 1.023 | 1914-1919 | |
| 5 | Javier Hernández | 1.018 | 1949-1952 | |
| 6 | Stu Roberts# | 1.004 | 1978-1985 | |
| 7 | Kalervo Reini# | 0.997 | 1980-1985 | |
| 8 | Ramón Ortega | 0.989 | 1967-1983 | |
| 9 | Ernest Sizemore# | 0.985 | 1983-1986 | |
| 10 | Theophilus Skouphas# | 0.958 | 1977-1988 | |
| 11 | Jarne Peltzer | 0.952 | 1930-1932 | |
| 12 | Alfonso Romo | 0.929 | 1959-1963 |
