Rockies hurler Miguel Castro (back) is not expected to pitch again this season, Nick Groke of the Denver Post reports.
Manager Walt Weiss revealed Saturday that Castro has been nursing a back injury, which explains why the 20-year-old hasn't appeared in a game since Sept. 14. The Rockies will likely just shut Castro down for the year and hope he can go through a normal offseason routine. Castro struggled as a starter with Triple-A Buffalo before being traded to Colorado in the Troy Tulowitzki deal, but the Rockies have not publicly shut the door on returning him to a starting role in the spring.