Mauricio Dubon hit a home run and Jeff Samardzija went six solid innings as the San Francisco Giants complicated the Los Angeles Dodgers' weekend division-clinching plans by holding on for a 5-4 victory in the opener of a three-game series at Dodger Stadium on Friday night. The Giants overcame a three-homer night from A.J. Pollock, who got the Dodgers within a run in the ninth inning with his third blast. Dubon's second career home run came against Dodgers left-hander Clayton Kershaw, who was held to his shortest outing of the season at four-plus innings.