DENVER -- Jorge De La Rosa pitched seven shutout innings and had an RBI single, Willy Taveras stole three bases and scored twice and the Colorado Rockies beat the San Francisco Giants 4-0 on Monday.

De La Rosa (8-7) was sharp for the fifth straight start, allowing four hits, striking out six and walking one. He didn't allow a runner past first base and twice erased leadoff singles by inducing double plays.

The defending NL champion Rockies began September six games behind the Diamondbacks in the NL West. They are hoping for another spectacular finish, after going 20-8 last September. Colorado has won 14 of their last 15 September games overall.

Following Benji Molina's two-out single in the fourth, De La Rosa didn't allow a hit and retired 10 of the last 11 batters he faced, including striking out four of the last five. He was lifted for a pinch-hitter in the seventh.

Since giving up seven earned runs in 1 2-3 innings against Florida on July 31, De La Rosa has gone at least six innings in each of his five starts and has not allowed more than three runs in any outing. He has a 1.78 ERA during that stretch.

Jonathan Sanchez (8-10), who was activated from the 15-day disabled list before the game, struck out six, walked three and allowed only three hits in seven innings. Sanchez, who went on the DL on Aug. 16 with a left shoulder strain, has not won since beating Oakland on June 29. He is 0-6 in eight starts during that span.

Molina had three hits for the Giants, who have lost six of their last seven.

The Rockies got all the runs they needed in the second. Troy Tulowitzki, who had two of the Rockies' four hits, hit a two-out triple to knock in Ryan Spilborghs and De La Rosa followed with a single to center to drive in Tulowitzki to make it 2-0.

The Rockies made it 3-0 in the third on the legs of Taveras. Taveras led off with a walk, stole second, moved to third on Matt Holliday's groundout to shortstop and scored on Garrett Atkins' flyout to shallow left field.

Taveras' speed also resulted in Colorado's final run. He singled with one out in the eighth, stole second and third and came home on a wild pitch.