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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Antão Vesadas# | 1.123 | 1986-1989 | |
| 2 | Pat Willis | 1.097 | 1974-1977 | |
| 3 | Pedro Aguirre | 1.051 | 1944-1948 | |
| 4 | Chris Montgomery | 1.050 | 1968-1971 | |
| 5 | Jon Fraser | 1.049 | 1960-1964 | |
| 6 | Alberto Pacheco# | 1.047 | 1979-1982 | |
| 7 | Tony Torres# | 1.041 | 1982-1985 | |
| 8 | Lorenzo Díaz | 1.039 | 1928-1932 | |
| 8 | Joe Warren | 1.039 | 1971-1974 | |
| 10 | Olezka Yahot | 1.038 | 1967-1970 | |
| 11 | Bill McTavish | 1.032 | 1943-1947 | |
| 12 | Larry Gray | 1.031 | 1959-1962 | |
| 12 | Kevin Ball | 1.031 | 1919-1922 | |
| 14 | James Graham | 1.030 | 1916-1919 | |
| 15 | Julián González | 1.029 | 1939-1942 | |
| 16 | Jim Esponda | 1.028 | 1937-1940 | |
| 17 | Roberto Bórquez | 1.026 | 1953-1956 | |
| 17 | Jerry Larson | 1.026 | 1975-1978 | |
| 19 | Allen Keith | 1.025 | 1958-1961 | |
| 20 | Mike Bolton | 1.024 | 1923-1926 | |
| 21 | Tim Smith | 1.022 | 1926-1929 | |
| 21 | George Duffy | 1.022 | 1952-1955 | |
| 23 | Raúl Miranda | 1.021 | 1964-1967 | |
| 24 | Wilber Gregg | 1.019 | 1943-1946 | |
| 25 | Melvin Bingham | 1.017 | 1948-1951 | |
| 26 | Alanzo Capano | 1.014 | 1911-1914 | |
| 26 | Jorge Nazur | 1.014 | 1943-1946 | |
| 28 | Fernando Chávez | 1.012 | 1956-1959 | |
| 28 | David Payne | 1.012 | 1960-1964 | |
| 28 | Randy Durrington | 1.012 | 1931-1933 | |
| 31 | Street Shepard* | 1.011 | 1930-1933 | |
| 32 | Carlos Fierro | 1.009 | 1926-1929 | |
| 32 | Geoff Polk# | 1.009 | 1979-1983 | |
| 32 | Héctor Carrasco | 1.009 | 1926-1929 | |
| 35 | Billy Black | 1.007 | 1953-1956 | |
| 35 | Júlio Martínez | 1.007 | 1911-1914 | |
| 37 | Jason Brown | 1.000 | 1963-1966 | |
| 37 | Tanner Cashmann | 1.000 | 1926-1929 | |
| 39 | Denver Hahn | 0.999 | 1947-1950 | |
| 40 | Fernando Barrón | 0.998 | 1939-1942 | |
| 41 | Pepe Rodríguez | 0.997 | 1966-1969 | |
| 42 | John Stone | 0.996 | 1952-1955 | |
| 42 | Francisco López | 0.996 | 1959-1962 | |
| 44 | António Hidalgo | 0.995 | 1938-1941 | |
| 45 | Grady Burns | 0.993 | 1967-1970 | |
| 45 | Stanton Jones | 0.993 | 1975-1978 | |
| 47 | Trent Dickerson | 0.991 | 1974-1977 | |
| 48 | Tung-chi Sun | 0.990 | 1919-1922 | |
| 49 | António Morales | 0.989 | 1928-1932 | |
| 50 | Dan Lee | 0.988 | 1971-1974 | |
| 51 | Paco Gómez | 0.985 | 1974-1977 | |
| 52 | Alonso García# | 0.984 | 1985-1988 | |
| 53 | Roberto Manuel | 0.971 | 1943-1946 | |
| 54 | Mark McCoy | 0.968 | 1948-1951 | |
| 55 | Clay O'Brien | 0.965 | 1948-1951 | |
| 56 | Manuel Alonzo | 0.964 | 1939-1942 | |
| 57 | Tony Daniel | 0.962 | 1953-1956 | |
| 58 | Alex Barber | 0.958 | 1977-1980 | |
| 59 | Alfonso García# | 0.939 | 1987-1991 | |
| 60 | Mike Frazier# | 0.924 | 1979-1982 |
