Pirates 4, Brewers 0: Jeff Karstens carried a shutout into the eighth inning and host Pittsburgh scored four unearned runs in the fifth, ending a four-game losing streak.

The Pirates took advantage of Carlos Gomez’s dropped fly ball in the fifth, scoring four times off Shaun Marcum (5-4) to snap the Brewers’ four-game winning streak. Gomez dropped Neil Walker’s fly ball leading off the fifth and our run-scoring hits followed.

Karstens (5-3) allowed seven hits in seven-plus innings, with no walks and four strikeouts. He left the game after injuring his right groin with two on and no outs in the eighth. Marcum gave up five hits and four runs (none earned) with one walk and five strikeouts in five innings.

Karstens also drove in a run in the fifth with a single to center, scoring Michael McKenry, who doubled home Walker with the game’s first run. Jose Tabata doubled home Karstens and Travis Snider singled home Tabata to give Pittsburgh a 4-0 advantage.

Snider robbed Milwaukee’s Ryan Braun of an extra-base hit in the first with a leaping catch at the top of the wall in right field.

Pittsburgh closer Joel Hanrahan loaded the bases on two hits and a walk in the ninth, but struck out Nyjer Morgan to end the game.

GAME NOTEBOOK: Tabata left the game in the sixth with a groin injury. … Pittsburgh OF Andrew McCutchen, the majors’ leader in batting average, went 0-for-4. He is hitting .346. … Milwaukee SS Jeff Bianchi recorded his first major-league hit on a single to left in the eighth, ending an 0-for-15 streak. He singled to right in the ninth. … Marcum made his return from the disabled list. He had not pitched since June 14 due to right elbow stiffness. ... Saturday's victory by Pittsburgh evened the season series at 4-4.