Reliever Pedro Baez balked in the go-ahead run in the seventh inning and Joe Panik followed with a sacrifice fly that capped a four-run rally Friday night, lifting the San Francisco Giants to a 6-4 victory over the Los Angeles Dodgers in the opener of a four-game series in San Francisco. The rivals, who are meeting for the third time already this season, will duel in a rare day-night doubleheader Saturday, with one game serving as the make-up for a rainout the last time the Dodgers visited San Francisco. After Los Angeles had scored four times and knocked out Giants starter Derek Holland in the fourth inning, San Francisco turned the tables against the Dodgers' bullpen in the seventh.