BALTIMORE, MD (AP) - Brandon Belt drove in four runs, Buster Posey homered and the San Francisco Giants used a rare offensive outburst to breeze past the Baltimore Orioles 8-2 on Saturday.
San Francisco built a 7-1 lead in the fifth inning and cruised to only its second win in 10 games. The Giants came in ranked last in the NL with a .221 batting average and had scored as many as seven runs only once in their previous 19 games.
Mike Yastrzemski scored twice and had an RBI for the Giants, who made it easy for rookie right-hander Shaun Anderson to earn his first major league victory.
Anderson (1-1) allowed two runs and five hits over seven innings in his fourth big league start. Anderson ended a run of 40 consecutive starts of fewer than seven innings by Giants pitchers - the team's longest such streak in the last 100 years.
Obtained in a 2017 trade that sent Eduardo Núñez to Boston, the 24-year-old Anderson pitched in seven games at the Triple-A level this year before making his debut with San Francisco on May 15 against Toronto. His previous three starts with the Giants each were five innings.
San Francisco scored all its runs off David Hess (1-7). Since throwing 6 1/3 innings of no-hit ball in Toronto on April 1, Hess has gone 0-7 over 10 starts.
Belt had a two-run single in the first inning and doubled in two runs during a four-run fifth. Posey ended a run of 50 at-bats without a homer by going deep to right in the third.
Renato Núñez hit his 15th home run for Baltimore, the eighth in 12 games.
The Orioles were without manager Brandon Hyde, who was attending his daughter's graduation in Illinois. Hyde was replaced by Tim Cossins, the team's field coordinator and catching instructor.
"I'd be lying if I said it's not exciting. Pretty cool," said Cossins, whose last managerial gig was in the Florida State League around 2005.
POMERANZ TO BULLPEN
Struggling Giants lefty Drew Pomeranz (1-6, 8.08 ERA) will likely miss at least one start after surrendering eight runs in 1 1/3 innings against the Orioles on Friday night. With an off day Monday, manager Bruce Bochy will shuffle his rotation and send Pomeranz to the bullpen. "He could help us Sunday, if we needed it," Bochy said.
Giants: RHP Trevor Gott (right forearm strain) should be ready to come off the IL on Tuesday, Bochy said. ... LHP Travis Bergen (shoulder strain) will need two or three rehab outings before the team considers taking him off the IL, Bochy said. Bergen has not pitched since May 17.
Orioles: OF-1B Mark Trumbo, who's recovering from right knee surgery, was 3 for 13 with a double in three rehab games with Class AA Bowie through Friday.
Giants: Jeff Samardzija (2-4, 3.83 ERA) works the finale Sunday after losing his previous three starts. The righty hasn't faced the Orioles since 2015, when he was with the White Sox.
Orioles: Gabriel Ynoa (0-1, 5.40) makes his second start since being inserted into the rotation for struggling Dan Straily. Ynoa allowed two runs in four innings against Detroit on Monday.
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