Pittsburgh center Maurkice Pouncey injured his right leg on the Steelers' first offensive play from scrimmage against Tennessee on Thursday night, and his return is questionable.
Pouncey was blocking when it appeared that right tackle Marcus Gilbert rolled up on his leg. Pouncey sat on the ground before going to the sideline. He was replaced by Doug Legursky.
The Steelers wound up kicking a field goal on their opening drive to tie Tennessee at 3.
Legursky came out at center for the Steelers' second drive of the game as well.
Pittsburgh safety Will Allen suffered a stinger after hitting Titans receiver Kenny Britt and knocking the ball loose. Allen was slow to get up before walking off the field. He started in place of Troy Polamalu, who was inactive because of a strained right calf. He returned in the second quarter.
Steelers linebacker Chris Carter hurt his right hamstring in the first quarter, and his return also is questionable.