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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 2013 | Tulsa T-Bones | 5.35 | .275 | TL |
| 2014 | Plano-Frisco Roughriders | 5.51 | .282 | TL |
| 2015 | Roswell UFO | 5.18 | .275 | TL |
| 2016 | Fresno Grizzlies | 5.27 | .276 | TL |
| 2017 | Plano-Frisco Roughriders | 5.37 | .291 | TL |
| 2018 | Plano-Frisco Roughriders | 6.24 | .299 | TL |
| 2019 | Midland Rattlers | 6.45 | .309 | TL |
| 2020 | Amarillo Armadillos | 6.94 | .305 | TL |
| 2021 | Plano-Frisco Roughriders | 5.06 | .271 | TL |
| 2022 | Fresno Grizzlies | 4.76 | .269 | TL |
| 2023 | Amarillo Armadillos | 4.71 | .274 | TL |
| 2024 | Fresno Grizzlies | 4.86 | .268 | TL |
| 2025 | 0.00 | .000 | TL |
