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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Lg | LgAvg | LgERA | Champion | Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|---|---|---|---|
| AL | .261 | 4.24 | Toronto Blue Jays | 2012 | Miami Marlins | 4.05 | .254 | NL |
| AL | .258 | 4.11 | Boston Red Sox | 2013 | New York Mets | 4.06 | .254 | NL |
| AL | .264 | 4.68 | Seattle Mariners | 2014 | San Francisco Giants | 4.33 | .255 | NL |
| AL | .261 | 4.17 | Los Angeles Angels | 2015 | St. Louis Cardinals | 3.66 | .251 | NL |
| AL | .260 | 4.10 | Los Angeles Angels | 2016 | New York Mets | 3.86 | .254 | NL |
| AL | .255 | 4.16 | Minnesota Twins | 2017 | Cincinnati Reds | 3.87 | .252 | NL |
| AL | .259 | 3.94 | Los Angeles Angels | 2018 | Atlanta Braves | 3.71 | .252 | NL |
| AL | .254 | 4.01 | Los Angeles Angels | 2019 | Colorado Rockies | 3.81 | .252 | NL |
| AL | .258 | 4.40 | Los Angeles Angels | 2020 | Arizona Diamondbacks | 3.90 | .248 | NL |
