Petty left Thursday's preseason game with a shoulder injury, his return is probable, Manish Mehta of the New York Daily News reports.
Petty started the fourth and final preseason game but was forced to leave early on in the game. The specifics of the injury are unclear at this point but it doesn't appear to be very severe. If he's unable to return look for Christian Hackenberg to see a majority of the snaps for the rest of the game.