Werdum would be crazy to stand with cain, he couldnt take down Overeem, no way in hell he takes down Cain. Bad matchup for Werdum.
Werdum is very good in the clinch. A lot of the shots JDS landed on Cain were in the clinch. I'd say he has a chance to land a solid knee or elbow. You never know. Looking forward to this match up. 
Lot of people selling Werdum short... He is elite and is a substantial threat to anyone.