 |
|
|
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 1970 | Lewiston Broncs | 4.99 | .272 | NORW |
| 1971 | Renton Wrecks | 4.85 | .270 | NORW |
| 1972 | Medford Nuggets | 4.58 | .271 | NORW |
| 1973 | Lewiston Broncs | 5.06 | .274 | NORW |
| 1974 | Medford Nuggets | 4.35 | .256 | NORW |
| 1975 | Lewiston Broncs | 4.49 | .266 | NORW |
| 1976 | Medford Nuggets | 5.26 | .274 | NORW |
| 1977 | Coos Bay-North Bend Blue Soxs | 5.36 | .276 | NORW |
| 1978 | Kennewick Bear Cubs | 5.37 | .268 | NORW |
| 1979 | Walla Walla Walleyes | 4.84 | .259 | NORW |
| 1980 | Kennewick Bear Cubs | 4.72 | .260 | NORW |
| 1981 | Coos Bay-North Bend Blue Soxs | 5.18 | .270 | NORW |
