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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 2013 | Pocatello Sidewinders | 5.87 | .262 | Pio |
| 2014 | Missoula Toros | 6.86 | .294 | Pio |
| 2015 | Great Falls Gunslingers | 6.58 | .284 | Pio |
| 2016 | Silver Bow County Ospreys | 5.74 | .277 | Pio |
| 2017 | Ashland Shakespearians | 5.77 | .270 | Pio |
| 2018 | Pocatello Sidewinders | 5.79 | .241 | Pio |
| 2019 | Great Falls Gunslingers | 5.91 | .258 | Pio |
| 2020 | Great Falls Gunslingers | 4.79 | .247 | Pio |
| 2021 | Medicine Hat Homers | 4.13 | .218 | Pio |
| 2022 | Great Falls Gunslingers | 4.18 | .210 | Pio |
| 2023 | Great Falls Gunslingers | 5.33 | .270 | Pio |
| 2024 | Great Falls Gunslingers | 6.19 | .260 | Pio |
| 2025 | Silver Bow County Ospreys | 7.79 | .302 | Pio |
