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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Jackie Richardson# | 1.06 | 1962-1962 | |
| 2 | Tim McDonald# | 1.07 | 1960-1961 | |
| 3 | Roger Craig# | 1.10 | 1961-1961 | |
| 4 | Mike Scharlau# | 1.18 | 1960-1960 | |
| 5 | Single A Placeholder# | 1.25 | 1962-1962 | |
| 6 | Steve Gilmore# | 1.27 | 1962-1962 | |
| 7 | Rafael Velasquez# | 1.34 | 1962-1962 | |
| 7 | Chet Lee# | 1.34 | 1960-1962 | |
| 9 | Single A Placeholder# | 1.35 | 1962-1962 | |
| 10 | Single A Placeholder# | 1.37 | 1962-1962 | |
| 11 | Single A Placeholder# | 1.39 | 1962-1962 | |
| 12 | Single A Placeholder# | 1.42 | 1962-1962 | |
| 12 | Single A Placeholder# | 1.42 | 1962-1962 | |
| 14 | Bob Hill# | 1.49 | 1962-1962 | |
| 15 | Single A Placeholder# | 1.50 | 1962-1962 | |
| 16 | Single A Placeholder# | 1.51 | 1962-1962 | |
| 17 | Single A Placeholder# | 1.61 | 1962-1962 |
