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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 2015 | Huntington Beach Surf | 5.62 | .294 | PAA |
| 2016 | Westwood Sixshooters | 4.49 | .272 | PAA |
| 2017 | Tacoma Fur Traders | 4.56 | .274 | PAA |
| 2018 | Tacoma Fur Traders | 4.72 | .276 | PAA |
| 2019 | Irving Blue Sox | 4.53 | .269 | PAA |
| 2020 | Sun Prairie Swallows | 3.83 | .257 | PAA |
| 2021 | Marquette Miners | 4.01 | .266 | PAA |
| 2022 | Durham Rapiers | 4.22 | .268 | PAA |
| 2023 | Durham Rapiers | 4.07 | .264 | PAA |
| 2024 | Mercer Island Screaming Eagles | 4.17 | .262 | PAA |
| 2025 | Mercer Island Screaming Eagles | 3.91 | .261 | PAA |
| 2026 | Mercer Island Screaming Eagles | 3.96 | .256 | PAA |
| 2027 | Athletic Club KC Academy | 3.89 | .253 | PAA |
| 2028 | Mercer Island Screaming Eagles | 3.99 | .257 | PAA |
| 2029 | Mercer Island Screaming Eagles | 4.17 | .262 | PAA |
| 2030 | Northville Eclipse | 3.72 | .253 | PAA |
| 2031 | Minnesota Loons | 4.03 | .258 | PAA |
| 2032 | Mercer Island Screaming Eagles | 4.27 | .264 | PAA |
| 2033 | Northville Eclipse | 4.11 | .257 | PAA |
