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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Dylan Aston | 1.1589 | 1934-1937 | |
| 2 | Enrique López | 1.1477 | 1940-1943 | |
| 3 | Aurelio Hernández* | 1.0914 | 1954-1957 | |
| 4 | Javier Negrete | 1.0597 | 1957-1960 | |
| 5 | Martin Colbert | 1.0522 | 1926-1929 | |
| 6 | Shahnawaz Mirza | 1.0308 | 1942-1945 | |
| 7 | António Rivera | .9723 | 1938-1941 | |
| 8 | Arthur Martínez | .9714 | 1939-1942 | |
| 9 | Matt Crowther | .9633 | 1949-1952 | |
| 10 | Ed Smith | .8944 | 1967-1970 | |
| 11 | Dan Estes | .8850 | 1967-1972 | |
| 12 | Steve Lee | .8808 | 1948-1951 | |
| 13 | Fred Walker# | .8766 | 1984-1987 |
