By Jeremy Kahn

It seems that the San Francisco Giants have the number of their longtime rivals, the Los Angeles Dodgers.

Buster Posey launched a grand slam deep into the Dodgers bullpen in the top of the third inning, helping the Giants to a 9-5 victory over the Dodgers at Dodger Stadium.

Following singles to Gregor Blanco and Nori Aoki and after Angel Pagan loaded the bases with a two-out walk, Posey took a 2-2 offering from Mike Bolsinger and put it into the Los Angeles night. It was the first game for Blanco after missing the prior 10 due to being on the concussion disabled list.

Chris Heston won his seventh game of the season, as he pitched 5.2 innings, allowing three runs on seven hits, while walking no one.

This was the eighth win of the season for the Giants over the Dodgers in 10 games, as the reigning World Champions moved within 1.5 games of the leaders in the National League West.

Brandon Crawford drove in Brandon Belt with a double in the top of the sixth inning to increase their lead to 5-3.

The Giants blew the game wide open in the top of the seventh inning, as they scored four runs that included a bases loaded walk to Crawford, a two-run single by Southern California native Matt Duffy and a RBI single by Blanco. All four runs came off of Dodgers rookie pitcher Josh Ravin.