Unless he is 100% I'd absolutely sit him. If there was ever a game to sit him, this is the one. Washington just lost one of their best defensive players to illness (Knighton - migraines). Besides I really would like to see just what we have backing these guys up in Bostic, Mayo, and Freeny. It would certainly be step down from Collins, but just how much of step down from a illness depleted player? Lets see. I shouldn't cost us a W.
The ONLY reason to play Collins this week is if you have money on the Pats to cover, or have the Pats D in a daily FF league. OTOH if you have the over, over you hope he sits. See how betting effects how you view the game, It's getting sick.