SAN FRANCISCO — Jung Hoo Lee and Rafael Devers each hit RBI singles in the first inning that held up to support starter Landen Roupp, and the San Francisco Giants beat the Los Angeles Dodgers 3-1 on Tuesday night.Shohei Ohtani went hitless with a pair of strikeouts over his initial three at-bats before a seventh-inning single that extended his career-best on-base streak to 53 games, tied for second place on the Dodgers’ franchise list with Shawn Green. On the 3-1 pitch from Erik Miller before his single, Ohtani challenged thinking it was a ball, but the called strike was upheld to make it full count.Roupp (4-1) struck out seven, walked five and allowed one run on one hit over five innings against the big-spending Dodgers. He struck out the side swinging in order in the third, including Ohtani’s second K of the game — a sign to manager Dave Roberts how much he wanted to keep the on-base streak alive.Ryan Walker, San Francisco’s sixth pitcher, pitched a 1-2-3 ninth with two strikeouts for his second save after blowing his first opportunity Saturday at Washington. The Dodgers were held to three hits.Casey Schmitt added a sacrifice fly in the three-run first as the Giants won for the fourt …
