League Index
 
Bold indicates World Championship Champion
 
Lg LgAvg LgERA Champion Year Champion LgERA LgAvg Lg
AL .269 4.88 Boston Red Sox 2004 Colorado Rockies 4.82 .267 NL
AL .269 4.73 Baltimore Orioles 2005 New York (N) Mets 4.42 .261 NL
AL .273 4.72 Baltimore Orioles 2006 San Diego Padres 4.25 .259 NL
AL .276 4.73 Boston Red Sox 2007 Montreal Expos 4.31 .262 NL
AL .280 4.87 Boston Red Sox 2008 San Francisco Giants 4.30 .259 NL
AL .275 4.71 Boston Red Sox 2009 Houston Astros 4.51 .265 NL
AL .271 4.65 Oakland Athletics 2010 Houston Astros 4.50 .268 NL
AL .273 4.74 Boston Red Sox 2011 Houston Astros 4.39 .266 NL
AL .265 4.42 Anaheim Angels 2012 Montreal Expos 4.20 .265 NL
AL .272 4.65 Detroit Tigers 2013 Houston Astros 4.24 .262 NL
AL .269 4.50 Texas Rangers 2014 Houston Astros 4.24 .261 NL
AL .274 4.66 Texas Rangers 2015 Montreal Expos 4.21 .261 NL
AL .272 4.56 Toronto Blue Jays 2016 Colorado Rockies 4.17 .258 NL
AL .274 4.61 Oakland Athletics 2017 Houston Astros 4.21 .260 NL
AL .274 4.45 Oakland Athletics 2018 Houston Astros 4.16 .257 NL
AL .269 4.37 Oakland Athletics 2019 New York (N) Mets 4.10 .258 NL
AL .272 4.52 Texas Rangers 2020 Pittsburgh Pirates 4.16 .259 NL
AL .272 4.45 Texas Rangers 2021 Houston Astros 4.25 .261 NL
AL .274 4.52 Texas Rangers 2022 Los Angeles Dodgers 4.31 .261 NL
AL .271 4.51 Detroit Tigers 2023 Los Angeles Dodgers 4.15 .261 NL
AL .272 4.59 Toronto Blue Jays 2024 Montreal Expos 4.14 .260 NL
AL .270 4.57 Seattle Mariners 2025 Houston Astros 4.18 .261 NL
AL .271 4.50 Detroit Tigers 2026 San Francisco Giants 4.16 .261 NL
AL .275 4.64 Baltimore Orioles 2027 Pittsburgh Pirates 4.32 .261 NL