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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Mauro Cardona# | .9883 | 1973-1991 | |
| 2 | Paul Jarl* | .8733 | 1915-1931 | |
| 3 | Pepe Fuentes* | .8659 | 1922-1941 | |
| 4 | Mike Davis | .8446 | 1912-1924 | |
| 5 | Eiske Jiménez | .8058 | 1972-1987 | |
| 6 | Benjamin Riefenstahl | .7821 | 1938-1946 | |
| 7 | César Rivera | .7733 | 1930-1941 | |
| 8 | Kauto Talus | .7671 | 1964-1980 | |
| 9 | Ed Stewart | .7668 | 1924-1941 | |
| 10 | Russ Pederson | .7647 | 1930-1938 | |
| 11 | Esteban Torres | .7549 | 1916-1931 | |
| 12 | Lancaster Seams | .7478 | 1958-1974 | |
| 13 | Deniska Darchiashvili# | .7472 | 1971-1991 | |
| 14 | Jeffrey Thomas | .7197 | 1949-1959 | |
| 15 | Francisco Soto | .7168 | 1968-1982 | |
| 16 | José Montero | .7135 | 1963-1970 | |
| 17 | Ramiro Navarro | .7093 | 1913-1929 | |
| 18 | Michael Underwood | .7051 | 1933-1940 | |
| 19 | Pedro Torres | .6897 | 1972-1983 | |
| 20 | Jesús Díaz# | .6887 | 1983-1991 | |
| 21 | Darryl Wolf | .6876 | 1975-1984 | |
| 22 | Andrés Nava | .6848 | 1959-1974 | |
| 23 | Jeremy Allen | .6814 | 1972-1983 | |
| 24 | Mike Wiggins# | .6785 | 1980-1990 | |
| 25 | Helmut Hoellwarth# | .6769 | 1977-1991 | |
| 26 | Gustaf Egberts | .6650 | 1970-1980 | |
| 27 | Freddy Reyes | .6626 | 1911-1917 | |
| 28 | Cliff Bailey | .6575 | 1947-1957 | |
| 29 | John Giles | .6522 | 1962-1971 | |
| 30 | Kian Rosbotham# | .6502 | 1982-1988 | |
| 31 | Rafael López# | .6362 | 1983-1990 |
