Alright I am going to put in my two cents as to how this is going to play out.
Fedor over BigFoot by second round submission
Werdum over Overeem by first round submission. I think that Overeem will hurt Werdum early and make the mistake to follow him to the ground in an attempt to finish the fight. Werdum will then make him look stupid and tap him quickly.
Arlovski over Sergei by Unanimous Decision
Rogers over Barnett by KO in the second. Barnett will have to be clean and I think that Rogers has enough power to end Josh's night. Listen we don't know how long Barnett has been taking PEDs and how much that has helped him in the past. Rogers has one thing going for him and that is he has a killer punch that can end anyone's night.
Fedor over Rogers by first round submission
Arlovski over Werdum by decision, I don't think that Andre would go to the ground with Fabricio and Werdum doesn't have the skills on the feet to beat Andre.
Final - Fedor over Arlovski by 3rd round KO. Andre isn't going to be as foolish as he was in the first fight, no flying knee attempts. But I still think that his chin will come back to bite him when after winning the standing battle he gets crumpled again by Fedor.
I know that most people want to see this tournament as a set up for Fedor vs Overeem but I don't see this happening. I still think that Overeem is one faceted and a great BJJ practitioner can expose him. Fedor got caught as everyone does and I think that anyone with a brain would realize that Werdum is not better than Fedor on most nights.