Jayden Daniels went into the training room early in the third quarter.
He injured his hamstring when Cowboys rookie linebacker Shemar James sacked him, twisting Daniels’ lower body around like a corkscrew as he brought him down. Daniels remained on the ground in obvious pain after the play.
Daniels was examined in the medical tent before leaving for the training room.
The Commanders list him as questionable to return with a hamstring injury.
Daniels fumbled on the play he was injured, and Jadeveon Clowney recovering for the Cowboys at the Dallas 45 with 11:47 remaining in the third quarter.
Marcus Mariota replaced Daniels, who just returned from a knee sprain last Monday night after missing two games.