LANDOVER, Md. (December 9, 2012) -- The Washington Redskins say Robert Griffin III doesn't have a major knee injury.

Team spokesman Tony Wyllie said Sunday that Griffin underwent an MRI and has a sprained right knee but that "everything is clear" in terms of significant ligament damage.

Wyllie specifically ruled out a season-ending torn ACL.

Wyllie said coach Mike Shanahan will update the rookie quarterback's condition Monday.

Griffin was injured in the final minutes of regulation in the Redskins' 31-28 overtime win over the Baltimore Ravens.

Griffin tore the ACL in the same knee at Baylor, causing him to miss most of the 2009 college season.

Said Griffin: "I'm not a doctor, but I know what an ACL feels like - and it doesn't feel like an ACL."