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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Gustavo Quintero | .4593 | 1936-1939 | |
| 2 | Félix Vázquez | .4549 | 1942-1945 | |
| 3 | Joseph Brandt | .4479 | 1928-1932 | |
| 4 | Tim Hill | .4405 | 1943-1948 | |
| 5 | Johnny Lambert | .4159 | 1926-1929 | |
| 6 | José Miranda | .3579 | 1977-1981 | |
| 7 | Xavier Medina | .3430 | 1911-1916 | |
| 8 | Carl Kessler | .3406 | 1975-1978 | |
| 9 | Harold Williams | .3362 | 1960-1963 | |
| 10 | Phil Bradshaw# | .3278 | 1981-1984 | |
| 11 | José Paresa# | .3264 | 1973-1977 | |
| 12 | Monte Brando | .3202 | 1963-1967 |
