Mitrione is going to KO Fedor. Fedor in 2016 is about 10 years past his prime and totally shot. His chin and reflexes are gone. The style he adopted towards the latter end of his career is not one suited for longevity either. From a legacy and health point of view, the guy should have stayed in retirement.
On paper this is a tough match up for Old Fedor. Mitrione is a big guy with quick hands and hits very hard. If the Maldonado fight is any indication, Fedor's chin is gone and for whatever reason he doesn't really use his sambo grappling skills in recent fights.
Yep the Maldonaldo fight was very worrying for any Fedor fan. Maldonaldo is a frikin bum fat middleweight really and Fedor was getting destroyed in that 1st rd. As you said Fedor is an elite grabbler and just seems to want to throw bombs on the feet.