(Photo credit: Darren Yamashita-Imagn Images)

Casey Schmitt hit two homers for the second time in his career and finished with four hits and three RBIs to lead the San Francisco Giants to a 6-4 victory over the Athletics on Saturday night at West Sacramento, Calif.

The four-hit outing was the fourth of Schmitt's career and it helped the Giants halt a three-game losing streak. Willy Adames had three hits and two RBI and Rafael Devers and Drew Gilbert added two hits apiece for San Francisco, which had 14 overall, eight for extra bases.

Trevor McDonald (2-0) allowed one run and five hits over 6 2/3 innings for the Giants. He struck out five and walked one.

San Francisco's Matt Gage worked a perfect ninth for his first save.

Brent Rooker hit a three-run homer and joined Darell Hernaiz in having two hits for the Athletics, who lost for the fourth time in their past six games.

Luis Severino (2-5) gave up five runs and 10 hits over six innings. He struck out seven and walked two while dropping to 3-11 in 19 starts at Sutter Health Park since joining the A's prior to last season.

Schmitt hit a full-count sweeper from Severino over the wall in left with two out in the first to give San Francisco the lead for good.

The Giants loaded the bases with one out in the third when Jung Hoo Lee singled, Luis Arraez drew a walk and Schmitt singled. After Devers struck out, Adames knocked in two runs but was thrown out trying to stretch it into a double.

Arraez walked with one out in the fifth before Schmitt went the opposite way. He hit a first-pitch cutter from Severino off the right-field foul pole to make it 5-0.

The Athletics got on the board in the bottom of the inning. Lawrence Butler walked and moved to third on a single by Hernaiz and scored on Jeff McNeil's fielder's choice.

In the seventh, Devers led off with a double and scored later in the inning on Matt Chapman's double.

The Athletics closed the gap in the eighth as Nick Kurtz and Shea Langeliers led off the inning with walks against Erik Miller. One out later, Caleb Kilian replaced the left-hander and Rooker came up and drilled a first-pitch slider well over the wall in left to pull the A's within 6-4.

Kilian recovered by striking out the next two hitters.

The walk stretched Kurtz's streak of reaching base to 39 consecutive games, the longest by an A's player since Jason Giambi reached in 39 straight in both the 1997 and 1998 seasons. Mark McGwire had a 48-game streak in 1996.

--Field Level Media