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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jorge Deleón# | 1.748 | 2054-2056 | |
| 2 | Wes T. Walker# | 1.793 | 2053-2054 | |
| 3 | Kojuro Kitakawa# | 2.020 | 2051-2052 | |
| 4 | David Luna# | 2.628 | 2051-2052 | |
| 5 | Domingo Velasco# | 2.660 | 2054-2055 | |
| 6 | Wang-fen Jia# | 2.693 | 2053-2054 | |
| 7 | Doug Morgan# | 2.734 | 2053-2054 | |
| 8 | Christos Waddington# | 2.855 | 2053-2054 | |
| 9 | José Bautista# | 2.900 | 2055-2056 | |
| 10 | Victor van Lint# | 2.945 | 2055-2056 | |
| 11 | Riemer Keizer# | 3.034 | 2053-2054 | |
| 12 | Xu Pi | 3.078 | 2052-2053 | |
| 13 | Yeong-hun Park# | 3.144 | 2054-2055 | |
| 14 | Carlos Guzmán# | 3.289 | 2054-2055 | |
| 15 | Jean-Luc Morand# | 3.315 | 2054-2055 | |
| 16 | José Archuletu# | 3.369 | 2052-2053 | |
| 17 | Juan Sánchez# | 3.467 | 2052-2053 | |
| 18 | Francisco Canó# | 3.665 | 2053-2055 | |
| 19 | Alfonso Crisci# | 3.670 | 2055-2056 | |
| 20 | Karol Pejemsky | 3.719 | 2051-2052 | |
| 21 | Alex Wicksted# | 3.729 | 2055-2056 | |
| 22 | Etienne de Ruijter# | 3.745 | 2056-2056 | |
| 23 | Giustino Cotichini# | 3.755 | 2049-2051 | |
| 24 | José Mecedone# | 3.906 | 2054-2055 | |
| 25 | José Alvarado# | 4.071 | 2050-2052 | |
| 26 | Jesús Bojórquez# | 4.129 | 2056-2056 | |
| 27 | Octávio Vázquez# | 4.260 | 2053-2055 | |
| 28 | Santiago Martínez | 4.263 | 2050-2051 | |
| 29 | Wikoli Niley | 4.357 | 2049-2051 | |
| 30 | Rob Hounsell# | 4.500 | 2054-2055 | |
| 31 | José García# | 4.536 | 2051-2053 | |
| 32 | José de Jesús Ramos# | 4.558 | 2049-2051 | |
| 33 | Jorge Martínez | 4.579 | 2051-2052 | |
| 34 | Fernando Rivera# | 4.870 | 2048-2050 | |
| 35 | Sergio Gallegos# | 4.972 | 2054-2055 | |
| 36 | Jo Miyashita# | 5.054 | 2055-2056 | |
| 37 | Naia Pirini# | 5.111 | 2055-2056 | |
| 38 | André Delaunay | 5.112 | 2051-2052 | |
| 38 | Aaron Ellicott# | 5.112 | 2049-2050 | |
| 40 | César Chávez | 5.486 | 2049-2050 | |
| 41 | Zhong-yi Lo# | 5.994 | 2048-2050 | |
| 42 | Wen Bao# | 6.302 | 2048-2050 | |
| 43 | Rafael Souza# | 6.611 | 2049-2051 | |
| 44 | Akihito Miura# | 6.959 | 2049-2050 | |
| 45 | Guo-xiu Chio | 7.522 | 2049-2050 | |
| 46 | Jorge Villalobos | 7.629 | 2048-2050 | |
| 47 | Xue-qin Liu | 10.500 | 2048-2050 |
