Dereck Rodriguez, who made his Major League debut at Coors Field this season on May 29, will make his first start there Tuesday. First pitch is at 5:40 p.m. PT. The Giants are 9-5 in his starts and 4-1 on the road. Rodriguez is 2-1 with a 2.03 ERA in his past seven starts, allowing two homers in 44 1/3 innings in that span and limiting opposing hitters to a .158 batting average and .515 OPS. German Marquez will start for the Rockies.