This guy can beat FEDOR!!
Nobody, under MMA rules can beat FEDOR (unless there is a lucky punch, i.e. cro cop v randleman).
Now, if it is under VALE TUDO, there is one guy who I could do the job.....MARK KERR.
I know that may upset some of the MMA fans but, think about this... Ok, the bell rings and mark kerr would easily take down fedor (this is fedors only weakness..takedown defense), now, Mark Kerr is the best in the history of MMA at "GROUNDING AND CONTROLLING." He can take anyone down with ease and control them EASILY... he is unbelievable at this. But, he cant ground and pound under MMA rules (no elbows or headbutts). Even Bas said that "they took all the weapons of Kerr."
In conclusion, I love FEDOR, but KErr could easily take him down and control him and than begin to head butt and elbow and win the fight. I know that is not a popular thing to say, but it is very possible. Now if it were MMA, kerr would easily take him down and control him, but it would eventually be stood up by the referee...I think in MMa it would be a draw...Fedor cannot get kErr on the ground and would not be able to stay on his feet ....kerr would be laying on him the entire time...in MMA.
One more thing, MMA is all about positioning.
Kerr would be in a dominant position the entire fight.
In MMa this dominant position would not do him any good.
In VALE TUDO, this dominant poosition would enable him to do damage-he cant ground and pound with punches alone, but if he had the addition of elbows and headbutts, he could get the job done.