DENVER(AP) Troy Tulowitzki homered and drove in a career-high five runs and Jorge De La Rosa won his career-best sixth straight start, leading the Colorado Rockies ' 8-2 rout of the San Francisco Giants on Saturday night.
The Rockies also moved a game ahead of the Giants in the NL wild-card race.
De La Rosa (8-7) allowed one run on seven hits over 7 1-3 innings with no walks and seven strikeouts. He retired the first 11 batters he faced, six by strikeout, before Pablo Sandoval stroked a double into right field with two outs in the fourth.
Jonathan Sanchez (3-9) matched De La Rosa inning for hitless inning until Todd Helton led off the fourth with a line-drive single to right for Colorado's first hit. One night earlier, Matt Cain had held the Rockies without a hit until Ian Stewart 's single with two outs in the fifth.
Right after Helton's single, rain sent the fans scurrying for shelter or umbrellas. Garrett Atkins drew a walk and one out later, Tulowitzki sent Sanchez's first offering into a downpour and over the wall in right-center for his 18th homer and a 3-0 lead.
The Giants pulled to 3-1 on Sandoval's RBI double in the sixth, which scored Andres Torres from first base.
Tulowitzki's run-scoring double in the bottom half of the sixth restored Colorado's three-run cushion and chased Sanchez, who gave up five earned runs on five hits over five-plus innings.
Chris Iannetta sent a pitch from right-handed reliever Justin Miller to the track in center for a sacrifice fly and a 5-1 lead over the Giants, who fell to 3-6 on their 10-game trip that concludes Sunday at Coors Field.
Randy Winn 's one-out triple in the eighth ended De La Rosa's night and brought in Rafael Betancourt . Pinch-hitter Fred Lewis grounded out to short, scoring Winn to make it 5-2.
Again, Tulowitzki responded, slapping an RBI single off Merkin Valdez in the bottom half of the inning, sparking a three-run that included a run-scoring double from Iannetta and a sacrifice fly from pinch-hitter Seth Smith .
Right-hander Jhoulys Chacin made his major league debut for Colorado in the ninth, allowing no hits, a walk and a wild pitch and striking out two.
NOTES: Giants OF Aaron Rowand missed his fifth straight start because of a bruised right forearm suffered when he was hit by a pitch Monday in Atlanta. Manager Bruce Bochy said there was a possibility Rowand could go on the DL if he doesn't get better in the next few days. ... Giants C Bengie Molina threw out Clint Barmes trying to steal second in the fifth inning, the sixth baserunner he's nabbed in his last seven games and the 16th this season. ... After Sunday, the Rockies will play 16 of their next 23 on the road.