Padres 5, Rockies 4: Carlos Quentin homered and drove in two runs while Clayton Richard posted his fifth victory in six starts as visiting San Diego improved to 10-1 over its last 11 games.

Quentin gave the Padres a lead they would not relinquish as he led off the second inning with his 15th blast of the season. The slugger added an RBI ground-rule double in the fifth that put San Diego ahead 4-1.

Richard (12-12) allowed three runs and eight hits over 6 1/3 innings en route to his first win in four career decisions at Coors Field. The left-hander has yielded three runs or less in six of his last seven outings.

Three relievers bridged the gap to Luke Gregerson, who served up a leadoff homer by Andrew Brown in the ninth before notching his third save.

After Quentin got San Diego on the board, Logan Forsythe doubled the lead later in the second with an RBI infield single that bounced up and hit Colorado shortstop Josh Rutledge in the face. Chase Headley made it 3-0 in the third with a run-scoring groundout.

Rutledge helped generate the Rockies' first run as he delivered a one-out double in the bottom of the frame and scored on Jordan Pacheco's groundout. Pacheco and Wilin Rosario hit solo homers in the sixth to get Colorado within 4-3, but pinch hitter Chris Denorfia created some much-needed breathing room in the eighth with an RBI infield single.

Colorado's Alex White (2-7) again failed to last more than four innings, surrendering three runs and four hits over 3 2/3 frames. The right-hander has pitched four innings or less in each of his last six starts.

Rosario and Brown had two hits apiece for the Rockies, who are 2-2 on their six-game homestand.

GAME NOTEBOOK: Rockies OF Dexter Fowler originally was in the starting lineup but was a late scratch due to his sore right ankle. Fowler has not started since suffering the injury on Aug. 22 against the New York Mets. ... San Diego RHP Tim Stauffer underwent surgery Friday to repair the flexor tendon in his elbow. Stauffer made one start this season, allowing four runs over five innings at Washington on May 14. ... Colorado SS Troy Tulowitzki (groin) and 1B Jason Giambi (viral syndrome) could be activated Saturday as rosters expand to 40. ... Padres RHP Huston Street (left calf) was scratched from his scheduled rehab appearance with Single-A Lake Elsinore on Friday after experiencing pain while jogging.