Micah Owings was 4-for-4 with three doubles and three RBIs while pitching 6 1-3 innings to boost the Diamondbacks over the Pittsburgh Pirates 8-0 Thursday and stop a three-game losing streak for the NL West leaders. The Diamondbacks have a one-game division lead heading into a three-game series Friday at Colorado with Webb on the mound. Arizona leads San Diego, which beat Milwaukee 9-5, by a game. Colorado, which later beat Los Angeles, is 2 back.