BALTIMORE -- Nick Hundley and David Dahl both homered in the sixth inning, and starter Jon Gray gave Colorado seven solid innings as the Rockies defeated the Baltimore Orioles 3-1 Wednesday night.

The Rockies (49-52) finished with only five hits, but two of them were homers that gave them their three runs.

Colorado put runners in scoring position only three times but came up with enough offense for Gray (7-4). The right-hander allowed one run on five hits with three strikeouts and two walks.

Orioles starter Dylan Bundy (3-3) began well in his third major league start. He retired the first 16 Rockies before giving up a walk and the two homers in the sixth, blasts that put Colorado on top for good.

Bundy allowed three runs on two hits in 5 2/3 innings with eight strikeouts and one walk.

The Rockies did not get a baserunner until Mark Reynolds walked with one out in the sixth. Hundley then hit his two-run homer to left, and Dahl added his solo shot to center two batters later -- his first major league homer in just his third game -- for a 3-0 lead.

Manny Machado cut the lead to 3-1 for the Orioles (58-42) with a solo homer in the bottom of the sixth, but Baltimore could add no more.

Rockies relievers Adam Ottavino and Boone Logan combined to pitch the eighth. Carlos Estevez came on in the ninth and needed just seven pitches to record his 10th save. Colorado earned its second victory in a row, winning the three-game series.

Baltimore also missed a chance to extend its lead over Toronto and Boston in the American League East, as both lost earlier in the day. The Orioles lead the Blue Jays by two games and the Red Sox by 2 1/2.

The Orioles nearly took the lead in the third when Matt Wieters led off with a foul ball over the right field foul pole. The umpires ruled it foul, and that call stood after a crew-chief review.

In the fourth, the Orioles put runners on first and third with no outs and loaded the bases with one down, but Gray retired the next two batters to keep the game scoreless.

Wieters doubled to start the fifth, but the Orioles left him stranded.

NOTES: The Orioles are hoping that OF Julio Borbon can rejoin the organization. He was designated for assignment Tuesday, and manager Buck Showalter said if Borbon gets through waivers that he could return. ... RHP Vance Worley, who threw seven strong innings in a spot start for Baltimore on Sunday, is going to be back in the bullpen when RHP Ubaldo Jimenez starts in the make-up game Thursday in Minnesota. ... The Rockies placed RHP Jason Motte on the disabled list with a rotator cuff strain. The move is retroactive to Tuesday. ... LHP Chris Rusin was reinstated from the disabled list. He gives the Rockies a third-left hander in their bullpen, one who can both start and come on in relief.