Buster Posey and the surprising San Francisco Giants continue their pivotal four-game series against the rival Dodgers. The star catcher hit a two-run homer his first time up Monday night after missing two weeks with a bruised left thumb, and San Francisco won the opener 7-2 in Los Angeles after putting All-Star shortstop Brandon Crawford on the 10-day injured list due to an oblique strain. The Giants, in first place since May 31, lead the NL West by two games over the defending World Series champion Dodgers.