Arias homered leading off the third, giving the Giants a 2-1 lead. In the fourth, Dodgers fans cheered when the video board displayed the final score of the St. Louis game.
The Giants added two runs in the fifth on Marco Scutaro’s RBI double in the right field corner off Jamey Wright, extending his hitting streak to a career-best 19 games, longest in the majors this season. Pagan, who walked leading off, beat the throw home to make it 4-1.
NOTES: The last time the Giants won 10 or more consecutive starts by one of their pitchers was when they won 11 in a row when Bill Swift started from April 6-June 27, 1992. ... The last time San Francisco lost one of Zito’s starts was on Aug. 2 against the New York Mets. ... Posey started at first base after mild back spasms forced him out of Monday’s game in the eighth inning. ... Dodgers 1B Adrian Gonzalez singled in the sixth, extending his hitting streak to 14 games, tops on the club. ... The Giants, who dropped the opener on Monday, haven’t lost two straight road games since July 7-8 at Pittsburgh. ... RHP Clayton Kershaw will start Wednesday’s season finale for LA. ... Dodgers great Maury Wills, an instructor for the team during spring training and the regular season, turned 80.