By Jeremy Kahn

Maybe seeing the President of the United States was something to possibly change the San Francisco Giants misfortunes of late.

Buster Posey hit a home run over the center field wall in the top of the seventh inning, as the Giants defeated the Philadelphia Phillies 5-4 at Citizens Bank Park.

Posey broke a 4-4 tie with his ninth home run of the season with two outs in the frame off of Phillies reliever Luis Garcia. It was second hit of the night for Posey, who ended up going 2-for-4 and broke out of a 4-for-28 slump.

The Posey home run made a winner out of Tim Lincecum, who skipped the trip to meet President Barack Obama on Thursday afternoon, so that he could prepare for the Phillies in Philadelphia.

In six innings of work, Lincecum gave up four runs on five hits, walking two and striking out four and improved his record to 6-3 on the season,

Matt Duffy and Justin Maxwell also hit home runs for the Giants, who put an end to their five-game losing streak.

Both Ryan Howard and Maikel Franco each hit home runs for the Phillies, who have dropped nine out of their 11.

The Phillies eighth inning ended in a bizarre way to say the least. With two on and one out, former Giants outfielder Jeff Francoeur hit a flyball to shallow right field that was caught and with Ben Revere running on the pitch and reaching second base, but he failed to touch second base on the way back to first base. The Giants then appealed the play and Revere was called out to end the inning.

Santiago Casilla pitched a perfect ninth inning to pickup his 16th save of the season.