According to Geoff Hobson, Andy Dalton has left the game to get an x-ray on the wrist of his throwing arm after a hit at the end of the second half by Cleveland Brown defensive tackle Phil Taylor.
Dalton getting X-rays on wrist
Taylor hit Dalton on a third-and-four play on the Cleveland 47-yard line with 56 seconds left in the first half. In the beginning of the second half, backup quarterback Bruce Gradkowski came into the game, leading the Bengals to a quick three-and-out.
Dalton could be seen on the sideline working with trainers on his wrist. He tried to throw a couple passes then stopped and watched the game on the sidelines.
His return to the game is questionable.
UPDATE: Dalton was downgraded to doubtful, with his right wrist heavily iced.