By Larry Fine SAN FRANCISCO - The San Francisco Giants hope to be able to draw on their experience in the 2012 postseason as they battle to overcome a 2-1 deficit to the Kansas City Royals in the World Series. The 3-2 loss on Friday gave the visiting Royals a 2-1 lead in the best-of-seven. Teams winning Game Three in a World Series that was tied 1-1 have gone on to win two-thirds of the time. "It was a good battle," said Giants right-fielder Hunter Pence. "We just got to keep plugging away. That's the game of baseball. ...