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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jon Perez# | 1.083 | 1957-1959 | |
| 2 | Tomoaki Nakamura# | 1.077 | 1952-1955 | |
| 3 | Mario van Dinteren# | 1.075 | 1955-1959 | |
| 4 | Pedro Flores# | 1.065 | 1952-1955 | |
| 5 | Matthew Brown# | 1.045 | 1957-1959 | |
| 6 | Leon Cooper | 1.029 | 1953-1956 | |
| 7 | Eddie Navarro# | 0.993 | 1953-1955 | |
| 8 | Jim Walchak | 0.987 | 1952-1954 | |
| 9 | Sandro Falatti | 0.970 | 1952-1956 | |
| 10 | Jose Zubiate# | 0.969 | 1952-1957 | |
| 11 | Joe Hayes | 0.955 | 1952-1955 | |
| 12 | Yutaka Harada# | 0.949 | 1956-1959 |
