Two weeks ago, the Dodgers arrived at AT&T Park for a three-game series, trailing the Giants by 4 1/2 games. A fortnight later, L.A. rates as a mere speck in the Giants' rearview mirror. After their 9-2 thumping of Colorado completed a four-game sweep Thursday afternoon in China Basin, the Giants' main concern was how to walk that enviable tightrope between relishing the moment and not appearing overconfident. They can, after all, clinch the NL West title as soon as Saturday. "We are happy, but we're not satisfied," said Pablo Sandoval, who hit two homers Thursday.