DENVER (AP) — Nick Evans and Chris Owings hit back-to-back homers, rookie Chase Anderson won his fourth straight start and the Arizona Diamondbacks beat the slumping Colorado Rockies 4-2 on Tuesday night.

Evans’ solo shot in the fourth was his first homer since Sept. 3, 2011, when he was with the New York Mets. Four pitches later, Owings hit another off Jorge De La Rosa (6-4). Owings also added an RBI double and finished a single shy of the cycle.

Anderson (4-0) didn’t overpower the Rockies so much as keep them guessing, throwing six effective innings in his longest outing since he was recalled from Triple-A Reno on May 6. He becomes the fifth rookie since 1998 to win his opening four starts.