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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Claudio Pérez# | 1.078 | 2019 | |
| 2 | Edgar Cantú# | 1.048 | 2019 | |
| 2 | Dave Burns# | 1.048 | 2019 | |
| 4 | Peter Baker# | 1.043 | 2019 | |
| 5 | António Prieto# | 1.041 | 2019 | |
| 6 | John Allen# | 0.984 | 2019 | |
| 7 | Quinn Johnson# | 0.976 | 2019 | |
| 8 | Bartolo Fernández# | 0.967 | 2019 | |
| 9 | David Nielsen# | 0.932 | 2019 |
