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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Mario van Dinteren# | 1.191 | 1956-1956 | |
| 2 | Leonid Tretyakov# | 1.165 | 1959-1959 | |
| 3 | Huibert van Duren# | 1.160 | 1956-1959 | |
| 4 | Misa Skerlic# | 1.114 | 1956-1959 | |
| 5 | Jorge Lopez# | 1.099 | 1956-1956 | |
| 5 | Donato Marciano# | 1.099 | 1956-1956 | |
| 5 | Clemens Martin# | 1.099 | 1956-1956 | |
| 5 | Israel Trujillo# | 1.099 | 1956-1959 | |
| 5 | Orlando Villarreal | 1.099 | 1956-1956 | |
| 10 | Kazu Nakanishi# | 1.094 | 1956-1959 | |
| 11 | Girolamo Iuliano# | 1.089 | 1956-1959 | |
| 12 | Emmanuel Aguirre# | 1.087 | 1959-1959 | |
| 12 | Tristan Nieves# | 1.087 | 1959-1959 | |
| 14 | Bill Purkis# | 1.076 | 1956-1959 | |
| 15 | Zuo-qian Lu# | 1.047 | 1956-1959 | |
| 16 | Roger Guillet# | 1.043 | 1956-1959 | |
| 17 | Li-xue Da# | 1.035 | 1956-1959 | |
| 18 | Estevan Munoz# | 1.030 | 1959-1959 | |
| 19 | Fernando Villegas# | 1.015 | 1956-1959 | |
| 20 | Immanuil Leschevsky# | 0.999 | 1956-1956 | |
| 20 | Nezih Tanju# | 0.999 | 1956-1959 | |
| 22 | Fedor Beck# | 0.992 | 1959-1959 | |
| 23 | Joe Brewer# | 0.977 | 1956-1956 | |
| 24 | Vassily Faseev# | 0.970 | 1956-1959 | |
| 25 | Efraim Elfring# | 0.955 | 1956-1959 | |
| 26 | Nicodemus Pittakis# | 0.953 | 1956-1959 | |
| 27 | Jonathan Perez | 0.942 | 1956-1956 | |
| 27 | Randy Gould# | 0.942 | 1959-1959 | |
| 29 | Allen Strong# | 0.930 | 1956-1959 | |
| 30 | Yurii Emchenko | 0.905 | 1956-1956 | |
| 31 | Veit Badeni# | 0.897 | 1956-1959 | |
| 32 | Wally Wilcox# | 0.870 | 1959-1959 | |
| 33 | Byron Ward | 0.832 | 1956-1956 | |
| 34 | Luis Serna# | 0.806 | 1956-1959 | |
| 35 | Dietmar Schwarzenberger# | 0.744 | 1956-1959 |
