Stephen Drew had three RBI, Jason Michaels homered and Doug Mientkiewicz had three hits, including a homer, runs for the Diamondbacks, who had lost two straight coming into the game.

Arizona racked up 18 hits to go with its 13 runs, both season highs.

Dan Haren (12-5) gave up four runs on eight hits with eight strikeouts in six innings to get the win.

Jason Davis (1-1) took the loss, giving up two runs on four hits and one walk in 3 2/3 innings.

Pittsburgh starter Yoslan Herrera went just 1 1/3 innings, giving up three runs on four hits with three walks.