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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Kevin Keller | 1.018 | 1936-1939 | |
| 2 | Shi-kai Jiu | 1.013 | 1918-1921 | |
| 2 | Bernie García | 1.013 | 1947-1950 | |
| 4 | Robert Palmer | 1.008 | 1917-1920 | |
| 5 | Francisco Maldonado | 0.988 | 1930-1933 | |
| 6 | Ricardo Rivera | 0.982 | 1911-1915 | |
| 7 | Willie Moore | 0.976 | 1957-1960 | |
| 8 | Fernando Colón | 0.974 | 1938-1941 | |
| 9 | Lúcio Fernández | 0.964 | 1954-1957 | |
| 10 | Juan Ramírez | 0.947 | 1928-1932 | |
| 11 | António Ojeda | 0.941 | 1917-1920 | |
| 12 | José Galló | 0.938 | 1925-1929 | |
| 12 | Miguel Angel Torres | 0.938 | 1940-1943 | |
| 14 | Nathan Howell | 0.936 | 1948-1951 | |
| 15 | Chris Godfrey | 0.934 | 1944-1947 | |
| 16 | Conner McKnight | 0.926 | 1944-1947 | |
| 17 | Rodrigo Puente | 0.921 | 1940-1943 | |
| 18 | Vinny Gonzáles | 0.920 | 1963-1966 | |
| 19 | Juan Pińa | 0.914 | 1944-1947 | |
| 20 | Tim Murdock | 0.909 | 1928-1931 | |
| 21 | Gary Lazarus | 0.894 | 1926-1929 | |
| 22 | Devin Adams | 0.892 | 1911-1914 | |
| 22 | Emerson McDormand | 0.892 | 1957-1960 | |
| 24 | Ron Hamm | 0.890 | 1959-1962 | |
| 25 | Larry Adams | 0.889 | 1948-1951 | |
| 26 | Paul Byers | 0.884 | 1947-1950 | |
| 27 | Ánibal Martínez | 0.877 | 1964-1967 | |
| 28 | Dave Sheppard | 0.875 | 1969-1972 | |
| 29 | Maximino Albertoni | 0.871 | 1935-1938 | |
| 30 | Clancy Baldwin | 0.869 | 1964-1967 | |
| 31 | Bill Harvey | 0.868 | 1958-1961 | |
| 32 | Clayton Meyer | 0.866 | 1933-1936 | |
| 33 | Brandon Williamson | 0.862 | 1966-1969 | |
| 34 | Sadaharu Batista | 0.859 | 1970-1973 | |
| 35 | Mike Farmer | 0.857 | 1973-1976 | |
| 36 | Perry Dean | 0.856 | 1951-1954 | |
| 37 | Jiao-long Hsia | 0.855 | 1934-1937 | |
| 38 | Pedro Ramírez | 0.850 | 1943-1946 | |
| 39 | Lane Smith | 0.848 | 1926-1930 | |
| 40 | David De Menses | 0.845 | 1951-1954 | |
| 41 | Jeffrey Jenkins | 0.842 | 1943-1946 | |
| 42 | Henry Brown# | 0.839 | 1973-1976 | |
| 43 | Mark Quested | 0.836 | 1952-1954 | |
| 43 | John Underwood | 0.836 | 1960-1963 | |
| 45 | Baltwin Young | 0.834 | 1968-1971 | |
| 46 | Todd Adams | 0.830 | 1962-1966 | |
| 47 | George Hatfield | 0.829 | 1940-1943 | |
| 48 | Alfredo Fajardo | 0.828 | 1931-1933 | |
| 49 | Samuel Pope | 0.817 | 1952-1955 | |
| 50 | Carlos Peńa# | 0.813 | 1986-1989 | |
| 51 | Dan Hummel | 0.798 | 1918-1921 | |
| 52 | Kelly MacHardy | 0.791 | 1966-1969 | |
| 53 | Francisco Nava# | 0.790 | 1977-1980 | |
| 54 | Joey Wybergh | 0.780 | 1955-1958 | |
| 55 | Jorge Colón | 0.778 | 1932-1935 | |
| 56 | Carter Hodge | 0.756 | 1966-1969 | |
| 57 | Román Torres | 0.746 | 1974-1977 | |
| 58 | Derek Hunter | 0.736 | 1956-1959 | |
| 59 | José Chávez | 0.730 | 1959-1962 | |
| 60 | Bill Kelley | 0.727 | 1969-1972 | |
| 61 | Júlio Torres# | 0.710 | 1977-1980 |
