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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Lg | LgAvg | LgERA | Champion | Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|---|---|---|---|
| sl1 | .258 | 4.12 | Pawtucket Red Sox | 2019 | Oklahoma City Dodgers | 4.24 | .256 | PCL |
| sl1 | .250 | 4.33 | Pawtucket Red Sox | 2020 | New Orleans Baby Cakes | 4.01 | .241 | PCL |
| sl1 | .248 | 4.06 | Lehigh Valley IronPigs | 2021 | El Paso Chihuahuas | 4.22 | .251 | PCL |
| sl1 | .252 | 3.95 | Buffalo Bisons | 2022 | Sacramento River Cats | 4.01 | .257 | PCL |
| sl1 | .265 | 3.82 | Pawtucket Red Sox | 2023 | Nashville Sounds | 3.69 | .256 | PCL |
| sl1 | .254 | 3.58 | Buffalo Bisons | 2024 | Nashville Sounds | 3.54 | .254 | PCL |
| sl1 | .000 | 0.00 | 2025 | 0.00 | .000 | PCL |
