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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Lg | LgAvg | LgERA | Champion | Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|---|---|---|---|
| AC | .288 | 5.93 | Iowa Cubs | 2012 | Tucson Padres | 5.42 | .285 | PC |
| AC | .263 | 4.98 | Memphis Redbirds | 2013 | Tacoma Rainiers | 4.86 | .269 | PC |
| AC | .265 | 4.83 | Iowa Cubs | 2014 | Las Vegas 51s | 5.16 | .271 | PC |
| AC | .269 | 5.11 | Round Rock Express | 2015 | Sacramento River Cats | 4.76 | .274 | PC |
| AC | .268 | 4.78 | Colorado Springs Sky Sox | 2016 | Reno Aces | 4.88 | .272 | PC |
| AC | .260 | 4.22 | New Orleans Zephyrs | 2017 | Las Vegas 51s | 4.24 | .264 | PC |
| AC | .261 | 4.07 | Omaha Storm Chasers | 2018 | Albuquerque Isotopes | 3.96 | .265 | PC |
| AC | .258 | 4.26 | Round Rock Express | 2019 | Reno Aces | 4.00 | .260 | PC |
| AC | .258 | 3.95 | Omaha Storm Chasers | 2020 | Fresno Grizzlies | 3.98 | .255 | PC |
| AC | .259 | 3.92 | Omaha Storm Chasers | 2021 | Fresno Grizzlies | 4.03 | .258 | PC |
| AC | .274 | 4.80 | Round Rock Express | 2022 | Fresno Grizzlies | 4.71 | .276 | PC |
| AC | .274 | 4.81 | Memphis Redbirds | 2023 | Salt Lake Bees | 4.72 | .267 | PC |
| AC | .256 | 4.89 | 2024 | 4.00 | .243 | PC |
