Clayton Kershaw outpitched Yusmeiro Petit for his major league-leading 19th win, and the Los Angeles Dodgers moved three games ahead of San Francisco in the NL West with a 4-2 victory over the Giants on Sunday. Kershaw lowered his majors-best ERA to 1.70, and put the Dodgers in command of the division. Matt Kemp hit his 20th homer, and Juan Uribe and A.J. Ellis each drove in a run to back Kershaw's latest gem. Buster Posey and pinch-hitter Matt Duffy had RBI singles for San Francisco.