Buster Posey hit a two-run home run as the Giants beat the Padres 4-3 on Sunday. With one runner aboard in the first inning, Posey took Robbie Erlin to deep to center for his fourth homer of the year. It was his only hit on the afternoon, and the catcher is batting an uncharacteristic .238/.314/.444 through the early games. He's got just three RBI in his last eight games.