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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | WHIP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Dan Cooper# | 0.87 | 1960 | |
| 2 | Gordon Kulla# | 0.92 | 1960 | |
| 3 | Larry Black# | 0.99 | 1960 | |
| 4 | Don Barber# | 1.07 | 1962 | |
| 5 | Bill Swain# | 1.13 | 1962 | |
| 6 | Rick Attaway# | 1.20 | 1962 | |
| 7 | Ken Morrison# | 1.22 | 1962 | |
| 8 | Barry Gilmore# | 1.24 | 1962 | |
| 9 | Single A Placeholder# | 1.29 | 1962 | |
| 9 | Dennis Stuenkel# | 1.29 | 1961 | |
| 11 | Tony Lewis# | 1.35 | 1961 | |
| 12 | John Muller# | 1.36 | 1961 | |
| 13 | Andy Luce# | 1.40 | 1961 | |
| 14 | Single A Placeholder# | 1.41 | 1962 |
