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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Seong-hyeon Chang | 1.121 | 1980-1989 | |
| 2 | Salvador Martínez | 1.048 | 1924-1929 | |
| 3 | Tony Comer | 1.041 | 1920-1926 | |
| 4 | Mo Broadhurst | 1.036 | 1916-1919 | |
| 5 | Kristian Smetacek# | 1.028 | 1982-1986 | |
| 6 | Naganori Sugimoto | 1.018 | 1922-1927 | |
| 7 | Javier Moreno | 1.017 | 1961-1966 | |
| 8 | Ricardo Martínez# | 0.994 | 1979-1990 | |
| 9 | Dan Charles | 0.985 | 1928-1933 | |
| 10 | Randy Mills | 0.972 | 1960-1970 | |
| 11 | Cristo Corona | 0.968 | 1965-1969 | |
| 12 | Aurelio Montalvo# | 0.965 | 1983-1987 | |
| 13 | Lúcio Sousa | 0.961 | 1958-1963 | |
| 14 | Alexis Tinari | 0.954 | 1928-1933 | |
| 15 | Rubén Bermúdez | 0.917 | 1951-1957 | |
| 16 | Jason Young | 0.862 | 1948-1951 |
