Aubrey Huff ended an 0-for-20 slump with a leadoff homer in the 10th inning and the San Francisco Giants snapped out of their offensive slumber, beating the New York Mets 7-6 on Tuesday night. Nate Schierholtz homered for the Giants, who had lost eight of 11. The defending World Series champions, shut out three times in their previous six games, entered with the second-worst offense in the National...