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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Matt MacGruder | 1.260 | 1922 | |
| 2 | Kevin McAleer | 1.168 | 1953 | |
| 3 | Matt O'Connell | 1.165 | 1965 | |
| 4 | Kevin McAleer | 1.158 | 1954 | |
| 5 | Young-keun Park | 1.156 | 1969 | |
| 6 | Roy McFadden | 1.153 | 1956 | |
| 7 | Matt MacGruder | 1.152 | 1921 | |
| 7 | José Bonillo | 1.152 | 1963 | |
| 9 | José Gonzáles | 1.148 | 1962 | |
| 10 | Matt O'Connell | 1.146 | 1964 | |
| 11 | Kevin McAleer | 1.140 | 1955 | |
| 12 | Domingo Sandoval | 1.137 | 1967 | |
| 12 | Alberto Ayala | 1.137 | 1939 | |
| 14 | Roberto Solís | 1.133 | 1967 | |
| 15 | Roosevelt Nelson | 1.132 | 1948 | |
| 16 | Enrique Méndez# | 1.131 | 1989 | |
| 17 | Yoshimochi Miyamoto | 1.125 | 1950 | |
| 18 | Roberto Castro | 1.119 | 1975 | |
| 19 | Danny Marshall | 1.118 | 1958 | |
| 20 | Stan Braun | 1.116 | 1911 | |
| 20 | Danny Marshall | 1.116 | 1959 | |
| 22 | Wayne Villalobos | 1.110 | 1938 | |
| 23 | Will Hernández | 1.106 | 1980 | |
| 24 | Pedro Saucedo | 1.105 | 1935 | |
| 25 | Roberto Solís | 1.103 | 1966 | |
| 26 | Yu Tsong | 1.101 | 1964 | |
| 26 | Matt MacGruder | 1.101 | 1920 | |
| 26 | Jesús González | 1.101 | 1921 | |
| 29 | Ricardo Vallecillo | 1.100 | 1939 | |
| 30 | Shunsho Tamura | 1.097 | 1969 | |
| 31 | Ha-Neul Yi | 1.095 | 1979 | |
| 32 | Juan Castillo | 1.092 | 1951 | |
| 32 | Travis Weaver | 1.092 | 1921 | |
| 34 | Roberto Pacheco | 1.091 | 1944 | |
| 34 | Félix García | 1.091 | 1919 | |
| 36 | Myung-hwan Kim# | 1.090 | 1982 | |
| 36 | Jorge Rosas | 1.090 | 1958 | |
| 38 | Cisco Medina# | 1.089 | 1985 | |
| 39 | Cristián Trujillo | 1.088 | 1952 | |
| 40 | Yoshimochi Miyamoto | 1.087 | 1951 | |
| 41 | Albert Martínez | 1.085 | 1916 | |
| 41 | Danny Higgins | 1.085 | 1950 | |
| 43 | Caden Helton | 1.083 | 1963 | |
| 43 | Joe Andrews | 1.083 | 1956 | |
| 45 | Roy McFadden | 1.080 | 1955 | |
| 46 | Tom Weston | 1.078 | 1914 | |
| 46 | Roberto Pinto | 1.078 | 1918 | |
| 48 | Alfonso García | 1.076 | 1966 | |
| 48 | Caden Helton | 1.076 | 1962 | |
| 48 | Joe Andrews | 1.076 | 1955 | |
| 48 | Emílio Reyna# | 1.076 | 1988 | |
| 52 | Juan Franco | 1.073 | 1951 | |
| 52 | Jesús Pueblo# | 1.073 | 1986 | |
| 52 | Flint Andrews | 1.073 | 1941 | |
| 52 | Júlio Colón | 1.073 | 1947 | |
| 56 | Dave Myers | 1.072 | 1919 | |
| 57 | Ed Reynolds | 1.070 | 1912 | |
| 57 | Jesús Vargas# | 1.070 | 1990 | |
| 59 | Mark Bishop | 1.068 | 1911 | |
| 60 | José Robles | 1.065 | 1914 | |
| 60 | Juan Sandoval | 1.065 | 1957 | |
| 62 | Jesús González | 1.063 | 1920 | |
| 63 | Sergio Berrios | 1.061 | 1936 | |
| 63 | Dimas Lenaerts | 1.061 | 1949 | |
| 65 | José Nieves | 1.060 | 1923 | |
| 66 | Josh Hobbs | 1.058 | 1949 | |
| 66 | Harley Connor# | 1.058 | 1984 | |
| 68 | Herb Jackson* | 1.056 | 1911 | |
| 68 | Clarence Bailey | 1.056 | 1960 | |
| 70 | Albert Martínez | 1.055 | 1914 | |
| 71 | Jit wei Goei | 1.051 | 1970 | |
| 71 | Toshiro Tamura | 1.051 | 1925 | |
| 73 | Russell Abbott | 1.050 | 1965 | |
| 73 | Chris McCoy | 1.050 | 1919 | |
| 75 | Toshiro Tamura | 1.048 | 1926 | |
| 76 | Cisco Medina# | 1.047 | 1984 | |
| 77 | Ricardo Márquez | 1.046 | 1980 | |
| 77 | Tomás Cruz | 1.046 | 1918 | |
| 77 | Roberto Castro | 1.046 | 1976 | |
| 80 | Virgil Oglethorpe | 1.044 | 1931 | |
| 80 | Edgar Sánchez | 1.044 | 1929 | |
| 82 | Emílio Reyna# | 1.043 | 1987 | |
| 82 | Jessie Green | 1.043 | 1977 | |
| 84 | Jessie Green | 1.042 | 1976 | |
| 85 | Santiago Herrera | 1.041 | 1979 | |
| 85 | Enrique Calderón | 1.041 | 1954 | |
| 85 | António De La Rosa | 1.041 | 1917 | |
| 88 | Tim Collier | 1.040 | 1957 | |
| 89 | Jessie Green | 1.039 | 1975 | |
| 89 | Bill Collier* | 1.039 | 1924 | |
| 91 | Albert Martínez | 1.036 | 1915 | |
| 91 | Ricardo Márquez | 1.036 | 1981 | |
| 91 | Todd Miller | 1.036 | 1927 | |
| 91 | Ha-Neul Yi | 1.036 | 1978 | |
| 95 | Gideon Vellenoweth | 1.035 | 1941 | |
| 96 | Bob Herring | 1.034 | 1946 | |
| 96 | Stan Joyce# | 1.034 | 1986 | |
| 96 | Millard Watson | 1.034 | 1970 | |
| 96 | Flint Andrews | 1.034 | 1940 | |
| 96 | Philippe Flament | 1.034 | 1923 |
