WASHINGTON (AP) — Denard Span made a diving catch in deep center field with two runners on base for the final out as the Washington Nationals held off the San Francisco Giants 6-5 Wednesday for their fifth straight victory.

Jordan Zimmermann (14-6) increased his NL-leading win total, allowing one run in seven innings and outpitching Tim Lincecum (6-12). Washington matched its longest winning streak of the season and moved within one victory of .500 for the first time since July 20.

The Giants scored once in the ninth off Rafael Soriano, and put runners on first and second with two outs. Hunter Pence hit a drive to left-center, and Span ran it down near the warning track to preserve the win.

Ian Desmond homered and Anthony Rendon had two RBIs in a five-run fourth inning that put Washington up 6-1.

REDS 5, CUBS 0

CHICAGO (AP) — Bronson Arroyo pitched seven crisp innings and Todd Frazier homered as the Reds beat the Cubs to complete a three-game series sweep.

Arroyo (11-9) allowed two hits, struck out seven and walked none in his second straight win. The crafty right-hander retired his first nine batters and faced the minimum through six innings.

The Cubs wasted a solid start by Chris Rusin (2-2) in their fourth straight loss. The left-hander allowed two runs and three hits while throwing just 76 pitches over six innings.

ROCKIES 4, PADRES 2

DENVER (AP) — Jorge De La Rose pitched seven solid innings, catcher Yorvit Torrealba completed a remarkable double play by tagging out two runners as the Rockies hung on to beat the Padres.

Corey Dickerson doubled twice, tripled and drove in two runs. Troy Tulowitzki had two hits and a pair of RBIs as Colorado completed a 5-1 homestand.

De La Rosa (12-6) allowed two runs on eight hits in running his record in eight day-game starts this season to 6-0 with a 1.57 ERA. He struck out six and walked one.

Andrew Cashner (8-7) gave up three runs on six hits in seven innings. He struck out seven and walked none.

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INTERLEAGUE

DIAMONDBACKS 5, ORIOLES 4, 14 INNINGS

PHOENIX (AP) — Aaron Hill had a game-ending single with one out in the 14th inning to give the Diamondbacks their third straight walk-off win over the Orioles, 5-4.

Baltimore led all three games entering the seventh.

Hill forced extra innings with an RBI single in the ninth off Jim Johnson in the Orioles closer's ninth blown save of the season and second in as many days.

Bud Norris (8-10), who started and threw five innings in San Francisco on Sunday, came on in the 14th and walked two batters ahead of Hill's single to take the loss.

Heath Bell (4-1) threw an inning to get the victory.