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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 2012 | Columbus Clippers | 5.32 | .278 | IL |
| 2013 | Buffalo Bisons | 4.85 | .262 | IL |
| 2014 | Rochester Red Wings | 4.87 | .269 | IL |
| 2015 | Charlotte Knights | 4.92 | .271 | IL |
| 2016 | Gwinnett Braves | 4.84 | .269 | IL |
| 2017 | Toledo Mud Hens | 3.65 | .253 | IL |
| 2018 | Columbus Clippers | 3.44 | .252 | IL |
| 2019 | Indianapolis Indians | 3.82 | .257 | IL |
| 2020 | Buffalo Bisons | 3.69 | .250 | IL |
| 2021 | Gwinnett Stripers | 3.38 | .244 | IL |
| 2022 | Charlotte Knights | 4.02 | .259 | IL |
| 2023 | Louisville Bats | 3.84 | .255 | IL |
| 2024 | 3.45 | .252 | IL |
