Update: Carr is officially out, per Ian Rapoport.
Update: Carr is officially questionable to return:
#Raiders QB Derek Carr (groin) is questionable to return. Marcus Mariota is warming up.— Ian Rapoport (@RapSheet) December 18, 2020
Las Vegas Raiders quarterback Derek Carr pulled up on a run near the goal-line in the first quarter and reached for his groin as he went out of bounds. It very much looked as if he strained his groin on the run. Marcus Mariota will likely take over if the injury keeps Carr out moving forward.