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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Christos Waddington# | 2.855 | 2053-2054 | |
| 2 | Riemer Keizer | 3.034 | 2053-2054 | |
| 3 | Carlos Guzmán# | 3.289 | 2054-2055 | |
| 4 | Jean-Luc Morand# | 3.315 | 2054-2055 | |
| 5 | José Archuletu# | 3.369 | 2052-2053 | |
| 6 | Mario García# | 3.548 | 2059-2060 | |
| 7 | Juan Zanudo# | 3.649 | 2058-2060 | |
| 8 | Francisco Canó | 3.665 | 2053-2055 | |
| 9 | Alex Wicksted# | 3.678 | 2055-2057 | |
| 10 | Cesar Liefting# | 3.837 | 2057-2059 | |
| 11 | Félix Santana# | 4.025 | 2056-2057 | |
| 12 | Dong-joo Im# | 4.028 | 2058-2059 | |
| 13 | Etienne de Ruijter# | 4.085 | 2056-2057 | |
| 14 | Alfonso Crisci# | 4.097 | 2055-2057 | |
| 15 | Esteban Rodríguez# | 4.108 | 2058-2060 | |
| 16 | José García | 4.536 | 2051-2053 | |
| 17 | José de Jesús Ramos | 4.558 | 2049-2051 | |
| 18 | Ernesto Zamora# | 4.849 | 2059-2060 | |
| 19 | Fernando Rivera# | 4.870 | 2048-2050 | |
| 20 | Jo Miyashita# | 5.054 | 2055-2056 |
