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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Guillermo Reyes# | 1.117 | 1983 | |
| 1 | Bob Hutchison# | 1.117 | 1981 | |
| 3 | Guillermo Reyes# | 1.098 | 1984 | |
| 4 | Júlio Otero | 1.079 | 1981 | |
| 5 | Charles Messer# | 1.075 | 1985 | |
| 6 | Mike Pryor# | 1.073 | 1982 | |
| 7 | Guillermo Reyes# | 1.069 | 1985 | |
| 8 | Guillermo Reyes# | 1.067 | 1982 | |
| 8 | Júlio Otero | 1.067 | 1982 | |
| 10 | Guillermo Reyes# | 1.056 | 1981 | |
| 11 | Bob Hutchison# | 1.039 | 1984 | |
| 12 | Mike Pryor# | 1.037 | 1985 | |
| 13 | Kyle Bailey# | 1.019 | 1985 | |
| 14 | Al Jackson# | 1.003 | 1983 | |
| 15 | Kyle Bailey# | 1.000 | 1981 | |
| 16 | António Marte# | 0.994 | 1981 | |
| 17 | Vinzenz Fink | 0.988 | 1982 | |
| 18 | António Marte# | 0.987 | 1984 | |
| 19 | Al Jackson# | 0.973 | 1984 | |
| 20 | José Guzmán# | 0.971 | 1985 | |
| 21 | Kyle Bailey# | 0.954 | 1983 | |
| 21 | Kyle Bailey# | 0.954 | 1984 | |
| 23 | Kyle Bailey# | 0.952 | 1982 | |
| 24 | António Marte# | 0.946 | 1985 | |
| 25 | Jim Lake# | 0.945 | 1982 | |
| 26 | Jim Lake# | 0.943 | 1983 | |
| 27 | Jim Lake# | 0.909 | 1981 |
