An MRI revealed Ben Roethlisberger has a hyperextended knee and a bone bruise. He hasn't been ruled out for week six. "I think we all have a deep sigh of relief in regards to the prognosis," coach Bill Cowher said. "Based on the information I have right now, Charlie Batch is the starter by default until I see more." The Steelers offense has a tough schedule the next three weeks: Jacksonville, Cincinnati, and Baltimore.