It was the third straight loss for Philadelphia, which upped its total to nine errors in eight games.
“We definitely have to straighten things up,” said Sandberg, in his first full season at the helm after taking over for fired Charlie Manuel last Aug. 16. “We’re working on it.”
The Brewers snapped a 4-all tie in the eighth when they scored three runs on one hit off Antonio Bastardo (0-1). Mark Reynolds scored the go-ahead run on an error by Howard, who let Logan Schafer’s grounder go into right field.
“They had two stolen bases off lefties,” Sandberg said. “We’ve been working with them on that and will continue to.”
Ryan Braun, who hit three homers Tuesday, broke the game open with a two-run triple to the wall in left-center that made it 7-4.
Tyler Thornburg (2-0) pitched two scoreless innings of relief to earn the victory.
Braun, who served a 65-game suspension for violations of major league baseball’s drug agreement and labor contract, was booed during each of his four putouts and every at-bat - none louder than when he reached third in the eighth.
Reynolds hit a two-run homer in the ninth.
“We’re just getting hit after hit and it’s fun to be a part of,” Reynolds said. “Offenses go through this, they just click. Guys get big hits. You go through these streaks where it’s fun to be a part of and tough to get us out. We’re just going to ride this streak out as long as we can.”
Philadelphia starter Roberto Hernandez allowed four runs - three earned - on seven hits in five innings while coming within one strikeout of matching his career high with nine.