SAN FRANCISCO -- Wilmer Flores homered three times -- including a grand slam -- and drove in eight runs to back a strong start by Logan Webb, leading the San Francisco Giants past the Athletics 9-1 on Friday night.
Flores, who set single-game career highs for homers and RBIs, hit his seventh slam in the third inning off A's starter JP Sears. He had a three-run shot against Michel Otanez in the sixth, then added a solo shot off Anthony Maldonado in the eighth.
According to ESPN Research, Flores is the first right-handed batter with a three-homer game at Oracle Park since the Dodgers' Kevin Elster did it on April 11, 2000. Joc Pederson, a left-handed batter, achieved the only other three-homer game at Oracle in 2022.
Flores also lifted his RBI total to 41, tying him with New York Yankees star Aaron Judge for the MLB lead.
Flores' big night was more than enough support for Webb (5-3), who carried a shutout into the eighth inning. The 2024 All-Star allowed one run and five hits in eight innings with four strikeouts and two walks. The Giants' ace has allowed two runs over his past four home starts covering 28⅓ innings for a 0.64 ERA.
Camilo Doval struck out the side in the ninth to wrap up the win in the Giants' first game against the A's this season in the former Bay Bridge Series.
Sears (4-3), who gave up one run in 14⅔ innings covering his previous two starts, allowed four runs and six hits in four innings.
It was the A's first visit to the Bay Area since leaving Oakland for Sacramento while a new stadium in Las Vegas is built.
The Associated Press contributed to this report.