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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 2013 | Appleton Foxes | 4.54 | .258 | MWL |
| 2014 | San Antonio Vipers | 5.55 | .283 | MWL |
| 2015 | Grand Rapids Saints | 4.82 | .270 | MWL |
| 2016 | Kane County Cougars | 5.07 | .276 | MWL |
| 2017 | South Bend Fighting Irish | 4.92 | .276 | MWL |
| 2018 | Modesto Miracle | 5.76 | .288 | MWL |
| 2019 | Kane County Cougars | 5.24 | .274 | MWL |
| 2020 | Grand Rapids Saints | 4.96 | .271 | MWL |
| 2021 | Grand Rapids Saints | 4.13 | .246 | MWL |
| 2022 | Grand Rapids Saints | 4.08 | .249 | MWL |
| 2023 | Modesto Miracle | 4.86 | .278 | MWL |
