DENVER (Ticker) -- Shawn Chacon showed he is little better at his new role than Denny Hocking is.

Chacon pitched his way around a three-base error by Hocking in the top of the ninth inning as the Colorado Rockies held on for a 3-2 victory over the Atlanta Braves in the first game of a day-night doubleheader.

A converted starter, Chacon struck out Marcus Giles to start the ninth. Andruw Jones followed with a line drive to left field that Hocking, a converted infielder, misplayed to allow Jones to reach third.

"We didn't want the misplay in left field, it obviously threw some more drama into the game that we didn't care for but he had good stuff today," Rockies manager Clint Hurdle said. "The sequence he threw to Giles is about as good of a sequence he's thrown all year." After an intentional walk to J.D. Drew, Chacon got rookie Adam LaRoche to foul out to third before striking out Jesse Garcia , securing his sixth save in seven chances.

Pinch-hitter Mark Sweeney lofted a sacrifice off Chris Reitsma (1-1) in the bottom of the eighth for the Rockies, snapping a 2-2 tie.

"First and foremost, I have to get it in the middle of the field and in the air," Sweeney said. "He's looking for a double play ball and I'm looking for something I can drive. I got a changeup a little up and I got it far enough where they couldn't throw anybody out."

Vladimir Nunez (3-0) worked a scoreless inning for the win.

Colorado snapped a seven-game losing streak against Atlanta.

Rockies reliever Tim Harikkala set a new franchise record by retiring the first 22 batters he faced this season before walking Drew in the seventh inning. He has not allowed a hit in 7 2/3 innings this season.

Drew had an RBI triple and Damon Hollins a run-scoring double in the third for the Braves.

Braves starter and former Rockie Mike Hampton worked five innings but was not involved in the decision.

Nursing a 2-1 lead in the fifth, Hampton walked Vinny Castilla with the bases loaded to force in the tying run.

"I felt really good today," Hampton said. "That fifth inning I was behind in the count a little more than I was earlier. With Vinny (Castilla) up there he's pretty aggressive and I thought he'd come out swinging, especially with the bases loaded. But he laid off some close pitches early and I was out of the zone."

Atlanta left a season-high 14 runners on base.

"We had a chance to score seven or eight and we just couldn't kick it in," Braves manager Bobby Cox said.