Roethlisberger may decide to sit out Sunday

Ben Roethlisberger, who suffered a concussion Sunday in Kansas City but was symptom free and able to practice all week, may opt to sit out Sunday night’s game against the Ravens, according to a league source. Roethlisberger was officially listed as questionable by the Steelers and widely expected to play, but informed coach Mike Tomlin Friday that he might sit out the game as a precaution, according to the source.

More here:
http://blogs.nfl.com/2009/11/27/roethlisberger-may-sit-out/