Cosmi is in concussion protocol following Saturday's loss to Philadelphia, JP Finlay of NBC Sports Washington reports.
Cosmi was pulled late in the fourth quarter Saturday and was evaluated for a concussion. With testing having confirmed that diagnosis, the veteran offensive lineman will need to clear the NFL's five-step concussion protocol before he can return to action. If Cosmi can't play Christmas Day against Dallas, Andrew Wylie or Nick Allegretti could start at right guard.