According to the team, Bengals starting left tackle Andre Smith left the game with a knee injury and his return is questionable. You can only assume that it happened at some point in the second quarter (mostly because they didn't have many snaps in the first quarter).
Andre Smith has knee injury and his return is questionable
— Geoff Hobson (@GeoffHobsonCin) August 25, 2013
Smith with left knee injury, return is questionable
— Joe Reedy (@joereedy) August 25, 2013