Griffin went 2 for 5 for 8 yards on four possessions for Washington (2-0). On his final play, early in the second quarter, he started to scramble but dropped the ball despite no contact. As the quarterback went to the ground to try to corral the loose ball, Lions defensive end Corey Wootton landed on Griffin.
Redskins coach Jay Gruden said Griffin had a concussion but that the QB's right shoulder, which also was hurt, would be OK. Gruden said he had "no idea" how long Griffin will be sidelined with the head injury.
The coach added he "would imagine, depending how long" Griffin is out, "he's still going to be our starter."
Copyright 2015 by The Associated Press