Keaton Winn won his third straight start with six strong innings, Thairo Estrada and Mike Yastrzemski belted their team's first back-to-back home runs of the season and the San Francisco Giants prevailed in another low-scoring affair with the visiting Pittsburgh Pirates, 3-2 on Sunday afternoon.

The homers by Estrada, his fourth of the year, and Yastrzemski, his second, came as part of a three-run third against Pirates starter Jared Jones (2-3). LaMonte Wade Jr.'s sacrifice fly scored Tyler Fitzgerald with the third run of the inning.

San Francisco hit multiple homers in a home game for just the second time this season, matching the blasts by Jung Hoo Lee and Patrick Bailey against the Arizona Diamondbacks on April 20.

The three runs were sufficient for Winn (3-3) and three relievers, who combined on a five-hitter. Winn served up three hits in his six innings while walking one and striking out five.

The rookie's outing was nearly identical to his previous two, in which he allowed one run and four hits over six innings in each.

Erik Miller and Ryan Walker kept the Pirates hitless in the seventh and eighth innings, respectively, before Camilo Doval, working for the third straight day, survived a shaky ninth for his fifth save.

Down 3-1 with two outs, Rowdy Tellez kept the visitors alive with his second double, then scored on a single by Jared Triolo. After a passed ball and a walk to Michael Taylor, Doval retired Joey Bart, a former Giants prospect, on a check-swing grounder to short to end it.

The Pirates' only other run of the game came in the fifth when Edward Olivares was hit by a pitch, advanced to third on Tellez's first double and scored on Triolo's sacrifice fly.

Triolo had his second two-RBI game of the season for the Pirates, who totaled just six runs in the three-game set.

Pittsburgh pulled Jones after five innings. He was charged with three runs on six hits, walking one and striking out three.

Fitzgerald went 3-for-3 with a double and Yastrzemski added two hits for the Giants, who won two of three in the series despite never scoring more than three runs.