LANDOVER, Md. (AP) - Washington Redskins coach Jay Gruden says quarterback Robert Griffin III sustained a concussion in the team's 21-17 exhibition victory over the Detroit Lions.
Gruden says after Thursday night's game that he has "no idea" how long Griffin will be sidelined.
The coach adds that he "would imagine, depending how long" Griffin is out, "he's still going to be our starter."
Griffin left in the second quarter after getting sacked on consecutive plays. He also got a stinger in his right shoulder, but Gruden says that should be OK.