(Sept. 16, 2012) -- San Francisco starter Ryan Vogelsong's slide continued Sunday as the right-hander endured a rocky 3 1/3-inning outing in the Giants' 10-2 loss to the Arizona Diamondbacks in Phoenix.
Vogelsong (12-9) allowed seven runs (six earned) and five hits while walking four. In a seven-start stretch beginning Aug. 13, Vogelsong has recorded a 10.31 ERA, contrasting with a National League-best 2.27 ERA in 21 outings before that skid.
With the score tied, 2-2, the D-backs scored five runs in the fourth inning to pull away. Giants shortstop Joaquin Arias booted Paul Goldschmidt's grounder for an error to open the inning. One out later, Cody Ransom doubled, and Gerardo Parra drew an intentional walk to load the bases. D-Backs pitcher Patrick Corbin grounded a 1-2 pitch into the right-field corner for a triple, giving Arizona a 5-2 lead. Vogelsong then walked Adam Eaton before being replaced by Shane Loux, who yielded a two-run double to Aaron Hill.
Arizona's Justin Upton homered off reliever Clay Hensley in the sixth before Corbin completed a four-RBI afternoon with a run-scoring single in the seventh. Catcher Buster Posey's passed ball enabled another D-backs' run to score.
The Giants had averaged 6.2 runs in the first five games of their roadtrip before encountering Corbin (6-7), the left-handed rookie who limited them to two runs and eight hits in a career-high eight innings.
Posey accounted for both of San Francisco's runs, driving in Angel Pagan with a two-out, first-inning single and scoring on Brandon Belt's fourth-inning double.
The Giants' National League West lead dwindled to seven games over second-place Los Angeles, pending the Dodgers-Cardinals outcome later Sunday.
In Monday's first game of a four-game series at AT&T Park, Giants left-hander Madison Bumgarner and Rockies right-hander Jhoulys Chacin will meet in a rematch of two pitchers who struggled when they faced each other a week ago. The Giants won that game at Coors Field, 9-8, and even though Bumgarner did not get credit for the pitching victory, he helped his team by hitting a three-run homer off Chacin in the fourth inning. First pitch is scheduled for 7:15 p.m.