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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Charlemagne Freeman* | 1.082 | 1934-1955 | |
| 2 | Allen David | 1.067 | 1959-1967 | |
| 3 | Francisco Vargas# | 1.065 | 1979-1991 | |
| 4 | Pedro Pérez | 1.062 | 1935-1948 | |
| 4 | Norbert Jones* | 1.062 | 1946-1953 | |
| 6 | Johannis Chimanga# | 1.054 | 1981-1991 | |
| 7 | Darge Mwendapole | 1.049 | 1953-1959 | |
| 8 | Dave Gardner | 1.046 | 1970-1983 | |
| 9 | António Vázquez | 1.045 | 1963-1970 | |
| 10 | Carson Simons | 1.043 | 1926-1931 | |
| 11 | Bryan Garland | 1.042 | 1933-1940 | |
| 12 | Vasily Jarovtsev | 1.040 | 1968-1980 | |
| 13 | Roland Wells# | 1.034 | 1981-1987 | |
| 14 | Ángel Velásquez | 1.032 | 1920-1929 | |
| 15 | Miguel Borbón | 1.031 | 1925-1942 | |
| 16 | Alexandre Marion# | 1.030 | 1979-1989 | |
| 17 | Jason Brown | 1.029 | 1956-1967 | |
| 17 | Joe Clayton | 1.029 | 1930-1938 | |
| 19 | Petros Piatkowski* | 1.025 | 1970-1978 | |
| 20 | Mark Davenport | 1.023 | 1914-1926 | |
| 20 | Héctor Cortés | 1.023 | 1916-1928 | |
| 22 | Aloysius Hope | 1.022 | 1927-1935 | |
| 23 | Jorge Medrano* | 1.021 | 1923-1935 | |
| 24 | Millard Montgomery | 1.020 | 1970-1987 | |
| 25 | Vicente Martínez | 1.018 | 1962-1972 | |
| 25 | Ánibal Romero | 1.018 | 1911-1917 | |
| 27 | Leslie LeBlanc | 1.017 | 1938-1944 | |
| 27 | Evan Leighton# | 1.017 | 1976-1991 | |
| 29 | Mathias Albertoni* | 1.015 | 1953-1969 | |
| 29 | Jorge Díaz | 1.015 | 1916-1923 | |
| 31 | Reynaldo Garza# | 1.013 | 1983-1991 | |
| 32 | Cristo Gutiérrez | 1.010 | 1931-1939 | |
| 32 | Albert McMurrich | 1.010 | 1911-1920 | |
| 34 | Hyung-gwang Sim | 1.009 | 1959-1963 | |
| 35 | Aatto Sala | 1.008 | 1976-1990 | |
| 36 | Brandon Moore | 1.007 | 1911-1917 | |
| 37 | Theodor Frenkiel | 1.005 | 1945-1955 | |
| 38 | Juan Colón | 1.004 | 1958-1974 | |
| 39 | Ron Swallow# | 1.002 | 1977-1991 | |
| 40 | Michael MacKinder | 1.001 | 1931-1937 | |
| 41 | Ramón Ortíz | 0.997 | 1975-1988 | |
| 42 | Manny Pacheco# | 0.996 | 1987-1991 | |
| 42 | Leonard Werner# | 0.996 | 1982-1990 | |
| 42 | Josh Lancaster | 0.996 | 1926-1936 | |
| 45 | Jesús Campos | 0.995 | 1930-1934 | |
| 46 | Brenden Howson | 0.994 | 1964-1970 | |
| 46 | Mahmud Kapkobi | 0.994 | 1970-1977 | |
| 48 | Håkon Olsnes | 0.992 | 1971-1981 | |
| 49 | Battista Caccianemici | 0.991 | 1970-1979 | |
| 50 | Henry Johnston# | 0.989 | 1974-1990 | |
| 50 | Yunosuke Hayagawa | 0.989 | 1971-1986 | |
| 50 | Kifle Kelueljang | 0.989 | 1971-1984 | |
| 53 | Alfredo Botequim | 0.987 | 1919-1930 | |
| 54 | José Ríos | 0.986 | 1973-1983 | |
| 54 | Harris Herring | 0.986 | 1959-1970 | |
| 54 | Louis Tiekink | 0.986 | 1975-1985 | |
| 54 | Raúl Alfonzo | 0.986 | 1938-1947 | |
| 58 | Pedro Quintanilla# | 0.985 | 1977-1990 | |
| 59 | Paul Green | 0.984 | 1952-1966 | |
| 59 | Trent Anderson | 0.984 | 1911-1918 | |
| 61 | Andrés Alfaro | 0.977 | 1976-1985 | |
| 61 | Tamasaburo Abe | 0.977 | 1950-1961 | |
| 63 | Alberto González | 0.967 | 1943-1950 | |
| 63 | Miguel Rodríguez | 0.967 | 1937-1943 | |
| 63 | Tulu Dunde# | 0.967 | 1976-1989 | |
| 66 | Martin Jordan | 0.965 | 1970-1981 | |
| 67 | Joe Howard# | 0.943 | 1987-1991 | |
| 68 | James Oswald | 0.937 | 1935-1944 | |
| 69 | Gideon Clews | 0.931 | 1921-1931 |
