SAN FRANCISCO -- Madison Bumgarner pitched six strong innings, and Austin Slater and Hunter Pence drove in runs as the San Francisco Giants beat Colorado 3-0 Saturday night and knocked the Rockies out of first place in the National League West. The Rockies slipped a half-game behind the Dodgers in the division. The Giants shut out Colorado for the second straight game after starting the month of September with 11 straight losses, their worst winless stretch since moving to San Francisco.