Rockies 4, Diamondbacks 1: Carlos Gonzalez homered and tripled to support starter Jorge De La Rosa as host Colorado took the rubber game of a three-game set.

De La Rosa (6-3) allowed a run and six hits in 5 1/3 innings to improve to 4-0 at home and 8-4 in his career against Arizona. Three relievers finished the job with Rex Brothers recording his second career save while tossing his 19th straight scoreless outing.

Gonzalez started the scoring with a solo shot in the bottom of the first and ripped an RBI triple in the third before scoring on a Trevor Cahill wild pitch to give the Rockies a 4-0 advantage. Dexter Fowler went 2-for-4 with a double, a stolen base and a run scored for Colorado, which finished its homestand at 5-2.

Cahill (3-5) gave up four runs and seven hits in six frames. He did not walk a batter but had just one strikeout for the first time since Sept. 22, 2011.

Cody Ross had two hits and scored the Diamondbacks' lone run on a double by Wil Nieves in the fourth.

GAME NOTEBOOK: Rockies closer Rafael Betancourt (groin) is expected to avoid the disabled list and could be ready to return to action by Friday. ... Diamondbacks OF Adam Eaton, who has been on the disabled list all season with an injured left elbow, had his rehab stint cut short Tuesday after feeling discomfort in the elbow. He was scheduled to return to Phoenix to be examined by the team doctor. ... Arizona returns home to open a series with San Diego on Friday. The Rockies open a set at San Francisco on the same day.