McKissic didn't practice Wednesday due to a concussion.
McKissic suffered a scare in Monday's game after his helmet hit off a Seahawks defender, causing him to stay on the turf for multiple minutes. He required a cart to get to the locker room, with reports after the game indicating that he was tending to a neck injury. However, upon the release of Washington's first Week 13 practice report, McKissic was revealed to have entered the NFL's concussion protocol. Clearly in the early phases due to his lack of activity Wednesday, he likely will need to get on the practice field by Friday to give himself a chance to be available Sunday at Las Vegas. If McKissic is unable to do so, Jaret Patterson and practice squad member Wendell Smallwood would be the candidates to work behind starter Antonio Gibson (shin).