Rookie Chase Anderson turned in six strong innings in his first career start at Coors Field as the Diamondbacks topped the Rockies on Tuesday night. Anderson gave up just one run on four hits and two walks, the run coming on D.J. LeMahieu's solo homer to lead off the fifth inning. The Diamondbacks scored first with three runs in the fourth inning, which began with back-to-back homers by Nick Evans and Chris Owings. Evans was starting in place of Paul Goldschmidt, who was out of the lineup for the first time this season. Coors experience: Anderson said his experience last season in the hitter-friendly Pacific Coast League taught him not to change his plan of attack based on the elevation or the ballpark. "I just tried to stick to my game plan and pitch off that," Anderson said. "If you try to pitch to the park, sometimes you're not very successful. If you stick to your game plan, usually you can be successful." The Diamondbacks have won all four of Anderson's starts. The outing, his first in which he completed six innings, lowered his ERA to 3.32.