Giants 5, Diamondbacks 0: Gregor Blanco went 2-for-4 with an RBI and a run scored as San Francisco limited Arizona to two hits en route to extending its season-best home winning streak to eight games.

Pinch-hitter Matt Duffy drove in a run and scored another while Angel Pagan and Travis Ishikawa each added an RBI for the wild card-leading Giants, who remained 2 1/2 games behind the first-place Los Angeles Dodgers in the National League West. Jean Machi (7-1) picked up the win in relief of Ryan Vogelsong, who allowed two hits and five walks over 6 2/3 scoreless frames.

Jake Lamb recorded both hits for the Diamondbacks, who have lost five in a row and fell to 2-7 on their 10-game road trip. Oliver Perez (3-4) suffered the loss, surrendering three runs on two hits and a walk in one-third of an inning after starter Josh Collmenter scattered three hits over six scoreless frames.

Arizona loaded the bases with two out in the second inning before Collmenter ended the threat by grounding out. The Diamondbacks got a runner to third with two down in the fourth, but Vogelsong induced an inning-ending groundout by Alfredo Marte.

San Francisco was unable to get a man past second base against Collmenter but accomplished the feat quickly versus Perez. Hunter Pence ignited a four-run rally by drawing a leadoff walk in the seventh and scored on Blanco's double to snap the scoreless tie.

GAME NOTEBOOK: The Diamondbacks have scored a total of six runs during their losing streak. ... Duffy greeted Arizona RHP Evan Marshall in the seventh with an RBI double and scored on Pagan's sacrifice fly after Brandon Crawford raced home on a wild pitch. ... Collmenter has allowed a total of three runs - two earned - and 14 hits in 27 2/3 innings over his last four starts.