The Rockies are deciding whether to shut Marquez (arm) down for the rest of the season, Patrick Saunders of The Denver Post reports.
Marquez was placed on the 10-day injured list Monday due to right arm inflammation, and manager Bud Black later clarified that his ace is essentially dealing with a "tired arm." Black also noted that the Rockies are in the process of determining whether Marquez will pitch again this season, per Saunders.