The Arizona Diamondbacks' 2011 season, the franchise's 14th season in Major League Baseball, included the team's first National League West championship since 2007, subsequently, their fifth division title since coming into MLB.
They lost to the Milwaukee Brewers in five games in the NLDS.
Friday, April 1, 2011 at Coors Field in Denver, Colorado Friday, October 7, 2011 at Miller Park in Milwaukee, Wisconsin Infielders Coaches Note: G = Games played; AB = At bats; R = Runs scored; H = Hits; 2B = Doubles; 3B = Triples; HR = Home runs; RBI = Runs batted in; AVG = Batting average; SB = Stolen bases All stats through September 28, 2011.
Note: W = Wins; L = Losses; ERA = Earned run average; G = Games pitched; GS = Games started; SV = Saves; IP = Innings pitched; H = Hits allowed; R = Runs allowed; ER = Earned runs allowed; BB = Walks allowed; K = Strikeouts All stats through September 28, 2011.
Milwaukee Brewers won the series, 3–2.