Reynolds (1-4) followed his first big league win on Sunday against Milwaukee with the worst outing of his career, lasting just 3 1/3 innings after giving up eight runs on 10 hits. Reynolds is most successful when he keeps his sinking fastball low and on the corners, but he left the ball up and out over the plate on Thursday, and the Giants took advantage.
With two outs in the second, Reynolds had a chance to get out of the inning unscathed, but he hit Steve Holm with a pitch and opposing pitcher Jonathan Sanchez singled to score John Bowker. Fred Lewis followed with a three-run homer into the Rockies' bullpen, and it was quickly 4-0.
"I've learned the hard way [to keep the ball down], especially early, with the few starts I've had," Reynolds said. "But it doesn't really discourage me that much because they still haven't hit my best stuff. They're capitalizing on my mistakes, which is something I have to keep in mind and not get too frustrated with myself."
Sanchez (6-3) wasn't much better for the Giants, surrendering seven runs in five innings, but he managed to earn the win thanks to his team's hot hitting.
The Giants were staked to a four-run lead three times on Thursday, but the Rockies kept chipping away. Yorvit Torrealba hit a two-run single that caromed off the glove of shortstop Emmanuel Burriss in the bottom of the second and Matt Holliday doubled off the left-field wall in the third inning to score Ryan Spilborghs and Jeff Baker to make it 6-4.
Torrealba, who hadn't started since June 6 because of his struggles at the plate, tied his career single-game high with three hits, including a double.
"You want everybody to play well, and hopefully he picked up some momentum," Hurdle said. "I was real happy with his at-bats today."
Ray Durham's two-run single up the middle in the fourth inning -- the 2,000th of his career -- knocked Reynolds out of the game, but the Rockies cut the deficit to 8-7 in the fifth inning when Garrett Atkins hit a bases-loaded, three-run double into the right-field corner.
But just when it appeared the Rockies would complete their comeback, struggling reliever Manuel Corpas gave up two runs in the seventh after retiring the first five batters he faced.
"We've got to be proactive in our coaching to get him back to where he can be," Hurdle said. "But we can't just stick our heads in the sand if things are getting out of whack. I don't think they're out of whack. I think he's very close to getting over the hump, he just needs to be more consistent."
The same could be said for the Rockies offense, which despite scoring seven runs, left 10 men on base and went 3-for-18 with runners in scoring position. Spilborghs ended the Rockies' last serious threat when he struck out looking with the bases loaded in the bottom of the seventh inning.
"We know where we are offensively and we know the sequences of at-bats that we haven't done as good as we should have," Hurdle said. "That being said, you just got to find a comfort zone to get into and just think of getting a quality at-bat. It didn't happen today."