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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Aaron Conley | 1.0428 | 1935-1938 | |
| 2 | Luke Peters | .9312 | 1933-1936 | |
| 3 | Pedro Cruz | .9126 | 1941-1944 | |
| 4 | Len Fanner# | .9074 | 1980-1983 | |
| 5 | Jesse Warren | .9065 | 1941-1944 | |
| 6 | William Mayer# | .9018 | 1979-1982 | |
| 7 | Barry Hoffman | .9013 | 1938-1941 | |
| 8 | Juan Ramírez | .8930 | 1964-1967 | |
| 9 | Domingo Espinoza | .8608 | 1966-1969 | |
| 10 | Javier Martínez | .8597 | 1966-1969 | |
| 11 | Brian Pope | .8473 | 1934-1937 | |
| 12 | Pend Tora# | .8223 | 1984-1987 | |
| 13 | Roger Martin | .8209 | 1958-1961 | |
| 14 | António Flores# | .7845 | 1976-1979 | |
| 15 | Curt Pope | .7795 | 1978-1981 | |
| 16 | Clark Barton# | .7780 | 1977-1980 | |
| 17 | Gonzalo Ramos | .7732 | 1969-1973 | |
| 18 | Wallace Kramer# | .7580 | 1983-1986 | |
| 19 | Tomás Nava | .7405 | 1980-1983 | |
| 20 | Travis Farley# | .7240 | 1980-1984 | |
| 21 | Jorge Santos# | .7211 | 1976-1979 | |
| 22 | Diego Bertoni# | .6939 | 1980-1983 | |
| 23 | John Edwards# | .6884 | 1976-1979 | |
| 24 | Jorge Román | .6878 | 1970-1974 | |
| 25 | Donald Frye# | .6482 | 1984-1987 | |
| 26 | Ryan Jeffries# | .6040 | 1980-1983 |
