STEELERS OFFENSE // Roethlisberger suffered a foot injury in Buffalo, described as a sprain, but is expected to play. In seven games, he's thrown for 12 touchdowns and four interceptions with a passer rating of 99.1. The Steelers' offensive line is a patchwork of reserves, castoffs and one rookie (center Maurkice Pouncey) and has struggled to protect Roethlisberger, who has been sacked 19 times. In addition to giving up five sacks Sunday, the Steelers' line was also flagged for six holding penalties. Three were against guard Chris Kemoeatu, including one that wiped out a 42-yard run by Mendenhall. Injuries sent both starting tackles to injured reserve, and the tackles are now manned by Jonathan Scott and Flozell Adams.