4:08pm: The Diamondbacks announced that they claimed Nieves and placed Blanco on the disabled list.
Nieves appeared in 16 games for the Rockies this year, but has been sidelined since July 8th with turf toe. The 34-year-old posted a .298/.333/.404 batting line in 51 plate appearances this year. Nieves, a nine-year MLB veteran, has a career line of .226/.272/.296. Henry Blanco has been backing up Miguel Montero behind the plate for the Diamondbacks.