Right now at the top of the food chain in the UFC 170lb div you have Fitch,Karo,GSP,Koshcheck and maybe Diego if he decides to stay at 170lbs, Karo just fought so I don't think it's very likely he will step in. Would Matt Hughes take a fight with any of these guys on short notice? and Would any of these guys take on Matt Hughes with short notice? In all likelyhood I think they will throw a scrub in for Hughes to beat on so they can still have the "nemisis" themed title fight once Serra heals up.