Bednar was unavailable for Sunday's game against the Nationals due to right side discomfort, Rob Biertempfel of The Athletic reports.
Manager Derek Shelton revealed prior to Sunday's contest that Bednar wouldn't be available out of the bullpen, and the Pirates' skipper said after the game that the right-hander's absence was due to discomfort in his side. The 26-year-old hasn't pitched since Tuesday, and the Pirates are reportedly considering placing him on the injured list.