He had a high ankle sprain to the same ankle that kept him out of Super Bowl XLV.
This comes in wake of news that Steelers running backs coach Kirby Wilson was burned in a house fire early Friday morning. He will not be at Sunday's game. It was announced earlier this week FS Ryan Clark will miss the game as well.
Down three key starters (RB Rashard Mendenhall was placed on injured reserve this week), the Steelers will enter the game with QB Ben Roethlisberger hampered by an injury as well. No word on whether anyone else related to the Steelers organization was injured this week, but there is still a few hours left in the day.