SAN DIEGO — Chris Denorfia hit a go-ahead RBI single in the seventh inning to lift the San Diego Padres to a 3-2 victory over the San Francisco Giants on Tuesday night.
Nick Hundley drew a leadoff walk in the seventh from rookie reliever Jake Dunning, who was called up earlier in the day from Triple-A Fresno. Ronnie Cedeno followed with a single to send Hundley to third and bring on reliever Javier Lopez.
Denorfia lined a 1-2 pitch to left for the single that broke a 2-all tie.
Dunning (0-2), who made his major league debut in June, took the loss. Tim Stauffer (3-1) got the win with 1 2-3 innings of shutout ball.
Huston Street pitched the ninth for his 26th save in 27 chances.
Defending World Series champion San Francisco (61-77) dropped into last place in the NL West, one game behind San Diego.
San Francisco catcher Buster Posey was pinch hit for in the seventh after he appeared to hurt his right hand on a wild pitch thrown by Madison Bumgarner in the sixth inning.
Posey shook his right hand after Bumgarner's pitch in the dirt and spent a couple of minutes being attended to by a trainer before he stayed in the game and completed the inning.
Giants center fielder Angel Pagan had a single, double and triple heading into his final at-bat in the ninth when he struck out.
San Diego took a 2-0 lead in the fifth following a leadoff double by Kyle Blanks and Hundley's one-out double. After Cedeno was walked intentionally, rookie pitcher Robbie Erlin drove in the second run with a bloop single. It was Erlin's first major league hit and RBI.