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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jorge Deleón# | 0.93 | 2054-2056 | |
| 2 | Wes T. Walker# | 0.97 | 2053-2054 | |
| 3 | Kojuro Kitakawa# | 1.00 | 2051-2052 | |
| 4 | Wang-fen Jia# | 1.04 | 2053-2054 | |
| 5 | Doug Morgan# | 1.07 | 2053-2054 | |
| 5 | Domingo Velasco# | 1.07 | 2054-2055 | |
| 5 | José Bautista# | 1.07 | 2055-2056 | |
| 8 | Christos Waddington# | 1.11 | 2053-2054 | |
| 9 | David Luna# | 1.12 | 2051-2052 | |
| 10 | José Archuletu# | 1.13 | 2052-2053 | |
| 11 | Carlos Guzmán# | 1.14 | 2054-2055 | |
| 12 | José Alvarado# | 1.15 | 2050-2052 | |
| 13 | Francisco Canó# | 1.17 | 2053-2055 | |
| 13 | Xu Pi | 1.17 | 2052-2053 | |
| 15 | Victor van Lint# | 1.18 | 2055-2056 | |
| 15 | Rob Hounsell# | 1.18 | 2054-2055 | |
| 17 | Yeong-hun Park# | 1.20 | 2054-2055 | |
| 18 | José Mecedone# | 1.21 | 2054-2055 | |
| 18 | Riemer Keizer# | 1.21 | 2053-2054 | |
| 18 | Alfonso Crisci# | 1.21 | 2055-2056 | |
| 21 | Karol Pejemsky | 1.22 | 2051-2052 | |
| 21 | Jean-Luc Morand# | 1.22 | 2054-2055 | |
| 23 | Alex Wicksted# | 1.26 | 2055-2056 | |
| 24 | Octávio Vázquez# | 1.28 | 2053-2055 | |
| 25 | Jorge Martínez | 1.29 | 2051-2052 | |
| 25 | Santiago Martínez | 1.29 | 2050-2051 | |
| 27 | André Delaunay | 1.30 | 2051-2052 | |
| 28 | Giustino Cotichini# | 1.31 | 2049-2051 | |
| 28 | Juan Sánchez# | 1.31 | 2052-2053 | |
| 30 | José García# | 1.32 | 2051-2053 | |
| 31 | Jesús Bojórquez# | 1.34 | 2056-2056 | |
| 32 | Etienne de Ruijter# | 1.35 | 2056-2056 | |
| 33 | Sergio Gallegos# | 1.38 | 2054-2055 | |
| 33 | Jo Miyashita# | 1.38 | 2055-2056 | |
| 35 | Naia Pirini# | 1.41 | 2055-2056 | |
| 36 | José de Jesús Ramos# | 1.49 | 2049-2051 | |
| 37 | Aaron Ellicott# | 1.52 | 2049-2050 | |
| 38 | Wikoli Niley | 1.62 | 2049-2051 | |
| 39 | César Chávez | 1.66 | 2049-2050 | |
| 40 | Fernando Rivera# | 1.68 | 2048-2050 | |
| 41 | Zhong-yi Lo# | 1.79 | 2048-2050 | |
| 42 | Rafael Souza# | 1.83 | 2049-2051 | |
| 43 | Wen Bao# | 1.85 | 2048-2050 | |
| 44 | Akihito Miura# | 1.88 | 2049-2050 | |
| 45 | Guo-xiu Chio | 2.01 | 2049-2050 | |
| 46 | Jorge Villalobos | 2.35 | 2048-2050 | |
| 47 | Xue-qin Liu | 2.51 | 2048-2050 |
