INJURY REPORT

Robert Griffin III, quarterback, Redskins: The rookie sustained a "mild concussion," according to coach Mike Shanahan, when he took a shot to the helmet while scrambling to try to avoid a sack during a 24-17 loss to the Falcons. Griffin left the game about 10 minutes in to the second half and did not return. He also was treated for a cut on his chin. About three hours after the game, Griffin wrote on Twitter: "I'm OK and I think after all the testing I will play next week." He will be evaluated Monday.

Troy Polamalu, safety, Steelers: The star limped off the field after aggravating his strained right calf in the first quarter of a 16-14 win over the Eagles. The 2010 NFL Defensive Player of the Year watched the entire second quarter from a seat on the bench and did not move.

Matt Cassel, quarterback, Chiefs: He left with a head injury in the fourth quarter after getting hit by Baltimore's Haloti Ngata while attempting a pass. Cassel remained flat on his back for several minutes before getting helped up and walking off the field under his own power.

Javon Ringer, running back, Titans: He was injured with just over three minutes to play after

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catching a pass near the sideline and heading up the field. Cornerback Josh Robinson wrestled him to the turf, twisting the running back down awkwardly. There was no immediate word on the severity of his injury.