Milwaukee committed a season-high four errors, leading to two unearned runs.
Pittsburgh's Shane Youman earned his first major league win. He limited the Brewers to two runs over six innings.
Milwaukee starting pitcher Chris Capuano made his first start since being sidelined by a groin injury almost a month ago. He went three-plus innings and gave up two runs, one earned, but got a no-decision.
Yovani Gallardo took the loss. He gave up three runs, two earned, in two-plus innings.
It was his first career relief appearance. He had gone 1-and-oh with a 2-point-seven-nine E-R-A in three starts as Capuano's replacement.
Milwaukee outfielder Corey Hart extended his hitting streak to 19 games with a first-inning double.