Logan Webb took a shutout into the seventh inning, Wilmer Flores ended a scoreless deadlock with a two-run single in the sixth and San Francisco held on to beat visiting Milwaukee 4-2 on Wednesday night.

Jung Hoo Lee collected three hits and Camilo Doval pitched out of a ninth-inning jam for the Giants, who won for the second time in three nights to start a four-game series.

Webb (3-1), who already had started two games this season in which the Giants were shut out, found himself in a pitchers’ duel with Freddy Peralta (2-2) until his teammates finally broke through.

Held to three hits in five innings, the Giants loaded the bases with no outs in the sixth on singles by Willy Adames and Lee, and a walk to Matt Chapman.

Peralta was pulled at that point, then watched reliever Nick Mears serve up Flores’ two-run single.

San Francisco scored twice more in the inning, one on a fielding error by second baseman Brice Turang and the other on a throwing error by shortstop Joey Ortiz.

Peralta was charged with the first three of the runs on five hits. He walked two and struck out three.

Webb allowed Garrett Mitchell’s single and walked Ortiz to open the seventh, then was taken out after getting Caleb Durbin to fly out. Left-hander Erik Miller came on to get Turang and Jackson Chourio to ground out.

Tyler Rogers threw a 1-2-3 eighth before the Brewers got a two-run, ground-rule double by Turang to cut their deficit in half with one out in the ninth against closer Ryan Walker.

Doval came on with the potential tying runs in scoring position and needed just five pitches to strike out Chourio and get Christian Yelich to ground out for his fourth save.

Webb allowed six hits in his 6 1/3 innings. He walked three and struck out six.

Flores had two of San Francisco’s eight hits, all of which were singles.

Turang’s ninth-inning double was the game’s only extra-base hit. He finished with three of Milwaukee’s nine hits.