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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Ovídio Avelino# | 0.88 | 2154 | |
| 2 | Mark Berry# | 0.94 | 2154 | |
| 3 | Miguel Rey# | 1.17 | 2154 | |
| 4 | Valentin Hrustalyov# | 1.24 | 2154 | |
| 5 | Tobias Aehrenthal# | 1.29 | 2154 | |
| 6 | José Ramírez# | 1.46 | 2154 | |
| 7 | Lao Liang# | 1.92 | 2154 |
