Pittsburgh Steelers safety Troy Polamalu injured his left leg/knee late in the first half of the game against the Baltimore Ravens.
Polamalu tried to play through the injury initially but would up going to the Steelers locker room right before the end of the first half.
Polamalu had played every snap on defense this season heading into Sunday night’s game. He was replaced in the lineup by safety Will Allen.
Polamalu has been ruled out for the rest of the game.