Redskins head coach Jay Gruden confirmed the injury after the game and said his quarterback will undergo more tests in the days to come. Pro Football Talk reports that the "hope" is Griffin will only miss 4-to-5 weeks.
Griffin landed awkwardly on his left ankle while completing a pass to receiver DeSean Jackson. He was taken off the field on a cart. After the game, Griffin said the turf at FedEx Field may have been to blame for the injury.
"My ankle got caught in the ground," he said, via the Washington Post's Cindy Boren.
Quarterback Kirk Cousins entered the game to replace Griffin. Two plays later, threw a 20-yard touchdown pass to fullback Darrel Young.
Before the injury, Griffin was 2-of-3 for 38 yards.
-- Sarah Barshop