Pittsburgh Steelers quarterback Ben Roethlisberger was downgraded to questionable on Thursday with a bruised knee bone. Thursday's practice is considered the most important of the week by the Steelers, and players who don't practice or practice little often are held out of games. Roethlisberger didn't practice Wednesday and had limited work Thursday. "He worked a little bit, but not as much as I hoped he would," coach Bill Cowher said. "There's not really any kind of setback. He does have a bone bruise and he has just not responded as quickly as I had hoped and his status is day-to-day."