Washington Redskins quarterback Robert Griffin III (10) injures his right leg as he is tackled by Baltimore Ravens defensive end Haloti Ngata (92) in the fourth quarter at FedEx Field in Landover, Md., on Sunday, Dec. 9, 2012. (Preston Keres/Special to The Washington Times)

Photo by: PRESTON KERES

Washington Redskins quarterback Robert Griffin III (10) injures his right leg as he is tackled by Baltimore Ravens defensive end Haloti Ngata (92) in the fourth quarter at FedEx Field in Landover, Md., on Sunday, Dec. 9, 2012. (Preston Keres/Special to The Washington Times)