The Colts could decide to sit running back Joseph Addai against the winless Lions this Sunday. Addai missed practice this week with a shoulder injury, and head coach Tony Dungy said on Thursday that he could hold his top runner out this weekend. "My sense is we'll probably hold him out if there's any question at all," Dungy said. "He wants to play. Right now, it's questionable. We'll see how it is."