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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Chris Mullins | 1.0583 | 1964-1969 | |
| 2 | Leo Vigar | 1.0121 | 1958-1963 | |
| 3 | Ken Jones | .8563 | 1964-1969 | |
| 4 | Ricardo Márquez | .8249 | 1978-1985 | |
| 5 | Myung-hwan Kim# | .7543 | 1975-1988 | |
| 6 | Manny Garza | .7471 | 1911-1916 | |
| 7 | Feng Tann# | .7173 | 1984-1991 | |
| 8 | Patrick Smith | .7027 | 1956-1967 | |
| 9 | Augusto Rodríguez | .6360 | 1957-1961 |
