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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Gus Welch | 1.113 | 1969-1972 | |
| 2 | Ernesto Hernández# | 1.099 | 1986-1989 | |
| 3 | John Creasy# | 1.093 | 1985-1988 | |
| 4 | Randall Bird | 1.090 | 1957-1960 | |
| 5 | Francisco Castro | 1.060 | 1951-1955 | |
| 5 | Lloyd Rigsby | 1.060 | 1932-1935 | |
| 7 | Gil Dennis | 1.057 | 1919-1923 | |
| 8 | Clarence Middleton# | 1.052 | 1981-1984 | |
| 9 | Barry Cook | 1.050 | 1972-1974 | |
| 10 | Gui-fan Tien | 1.046 | 1940-1944 | |
| 11 | Manuel Sánchez | 1.041 | 1965-1968 | |
| 11 | Larry Rose | 1.041 | 1943-1946 | |
| 13 | Hayden Moy | 1.039 | 1952-1956 | |
| 14 | Alfredo González | 1.037 | 1923-1925 | |
| 14 | Raúl Mendoza | 1.037 | 1944-1947 | |
| 16 | Howard Jackson | 1.036 | 1949-1952 | |
| 17 | Loren Walters | 1.033 | 1973-1976 | |
| 18 | Millard Barr | 1.032 | 1947-1950 | |
| 19 | Cy Lane | 1.030 | 1929-1932 | |
| 20 | Martin Starks | 1.029 | 1962-1965 | |
| 21 | Dawson Shepard | 1.028 | 1911-1915 | |
| 22 | Víctor Vallejo | 1.026 | 1943-1946 | |
| 23 | Jason McDowell | 1.025 | 1925-1929 | |
| 24 | Félix Varela | 1.021 | 1947-1950 | |
| 25 | Jesús Enríquez | 1.017 | 1926-1929 | |
| 26 | Javier Navarro | 1.016 | 1936-1941 | |
| 27 | León Torres* | 1.015 | 1955-1958 | |
| 27 | Anastasio Ramírez | 1.015 | 1956-1959 | |
| 29 | Fletcher Lambert | 1.014 | 1959-1962 | |
| 30 | Richard Holman | 1.012 | 1936-1939 | |
| 30 | Nate Yandell | 1.012 | 1926-1929 | |
| 32 | Ray Crabtree# | 1.011 | 1977-1981 | |
| 32 | Juan Escueta | 1.011 | 1965-1968 | |
| 32 | Jeff Miller | 1.011 | 1965-1968 | |
| 35 | Dennis Dunn | 1.008 | 1968-1971 | |
| 36 | Bryan Warren | 1.005 | 1936-1939 | |
| 36 | Alberto González | 1.005 | 1938-1943 | |
| 38 | Ray Parker# | 1.004 | 1972-1974 | |
| 39 | Chris Howard | 1.001 | 1911-1914 | |
| 39 | Ryan Koons | 1.001 | 1957-1960 | |
| 41 | Ed Froehlich | 0.999 | 1962-1965 | |
| 42 | Calvin Davis | 0.996 | 1945-1948 | |
| 43 | Sixto Valdés | 0.992 | 1948-1951 | |
| 43 | Pete Hurley | 0.992 | 1929-1932 | |
| 45 | Mark Bass | 0.989 | 1959-1962 | |
| 46 | Tracy Green | 0.988 | 1926-1929 | |
| 46 | Randall Webster | 0.988 | 1960-1964 | |
| 48 | Alfredo Reyes | 0.987 | 1926-1929 | |
| 49 | Ricardo Muñíz# | 0.986 | 1985-1988 | |
| 49 | Trevor Galloway | 0.986 | 1964-1967 | |
| 51 | Glenn Poe | 0.984 | 1936-1939 | |
| 52 | Tim Lucas# | 0.983 | 1975-1978 | |
| 53 | Paul Jones | 0.980 | 1964-1967 | |
| 54 | Gerald Sullivan | 0.979 | 1962-1965 | |
| 54 | Jeff Moore | 0.979 | 1926-1929 | |
| 56 | José Álvarez | 0.972 | 1956-1959 | |
| 57 | Chad Scott | 0.962 | 1956-1959 | |
| 58 | Diego Hernández# | 0.958 | 1977-1980 | |
| 59 | Dana Smith | 0.952 | 1969-1972 | |
| 60 | Ron Durham | 0.944 | 1950-1953 | |
| 61 | Ezekiel Hershberger | 0.933 | 1913-1916 |
