Steelers linebacker James Harrison has been ruled out for Sunday's game against the Titans because he will undergo a surgical procedure for a broken orbital bone around his right eye on Wednesday. Harrison, a four-time Pro Bowler and 2008 AP NFL Defensive Player of the Year, will be out indefinitely and there is no timetable for his return. "Needless to say he is going to be out for a number of weeks," coach Mike Tomlin said. "I will have more details regarding that injury and the rate of recovery and so forth after he has the surgical procedure tomorrow to get that fixed."