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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Dan Cooper# | 0.549 | 1960-1960 | |
| 2 | Carlos Ayala# | 1.667 | 1960-1961 | |
| 3 | Gordon Kulla# | 1.761 | 1960-1960 | |
| 4 | Bill Swain# | 2.092 | 1962-1962 | |
| 5 | Don Barber# | 2.604 | 1960-1962 | |
| 6 | Larry Black# | 2.658 | 1960-1960 | |
| 7 | Dennis Violette | 2.850 | 1960-1961 | |
| 8 | Ken Morrison# | 2.866 | 1962-1962 | |
| 9 | Andy Luce# | 2.967 | 1960-1962 | |
| 10 | John Muller# | 3.079 | 1961-1961 | |
| 11 | Rick Attaway# | 3.130 | 1962-1962 | |
| 12 | Barry Gilmore# | 3.235 | 1961-1962 | |
| 13 | Dennis Stuenkel# | 3.857 | 1961-1961 | |
| 14 | Single A Placeholder# | 4.195 | 1962-1962 | |
| 15 | Tony Lewis# | 4.200 | 1961-1961 | |
| 16 | Single A Placeholder# | 4.761 | 1962-1962 |
