Germán Márquez gets the start for the Rockies, his first since the All-Star Break. His last outing was strong, as he allowed three runs in seven innings against the White Sox on July 7. Márquez was roughed up in his only start against the Padres this year, allowing six runs in five innings at Petco Park on June 2.
Márquez will be opposed by Luis Perdomo, who has a 5.32 ERA in five career appearances, three of them starts, against the Rockies. None of his three starts against Colorado have come at Coors Field.
First pitch tonight is at 6:40 p.m. Mountain time.