Titans defensive back Michael Griffin went down with an apparent left arm injury Sunday against the Eagles. Griffing suffered the injury trying to wrap up a Philadelphia player in the second quarter. He was escorted back to the locker room for further evaluation.
The Bengals have officially opened AJ McCarron's 21-day practice window on Tuesday, according to the Cincinnati Enquirer. The rookie quarterback is on the reserve/non-football injury list with a shoulder injury. If he is unable to return in 21 days, he will be ruled out for the remainder of the season.