"Steelers center Maurkice Pouncey has been ruled out of Monday night's game in San Francisco and quarterback Ben Roethlisberger is questionable, both because of left high ankle sprains.

Both players sustained their injuries in the second quarter of last Thursday's 14-3 win over Cleveland. Doug Legursky will start in place of Pouncey; Roethlisberger was limited in practice yesterday and yesterday and today.

Saftey Troy Polamalu (hamstring) was a full participant in Saturday's practice and is listed as probable, as is right tackle Marcus Gilbert."