Cosmi suffered a concussion in Sunday's 37-20 loss to the Cowboys, Nicki Jhabvala of The Athletic reports.
Cosmi entered the NFL's five-step concussion protocol following Sunday's game. The starting right guard will need to progress through the protocol before being cleared for game action by an independent neurologist. If Cosmi recovers quickly, the offensive lineman will have a chance to reach full participation in time to play in Sunday's game against the Seahawks.