Hunter Pence's three-run blast in the bottom of the eighth capped off a five-run inning that propelled the Giants to a 9-6 comeback win over the Rockies on Sunday.
The bullpen squandered a one-run lead and allowed three runs after taking over for starter Barry Zito in the sixth, but the Giants won the rubber match of the three-game series with the big eighth inning.
The Giants opened the bottom of the eighth by loading the bases with no outs. Brandon Crawford hit a bloop single to left and Hector Sanchez followed with a pinch-hit ground rule double, with Angel Pagan following with a walk.
After a Marco Scutaro popout to left, a diving Josh Rutledge wasn't able to handle Melky Cabrera's sharp infield single to short, which drove in Crawford. A Buster Posey sacrifice fly to left scored Joaquin Arias, who had been pinch-running for Sanchez, and Pence followed with his go-ahead home run, his first since joining the Giants.