Roy Nelson has long been critical of drug cheats, and Alistair Overeem is one of the biggest. He's currently set to face Stefan Struve at UFC on FOX 13 in December, but Struve was a last minute withdrawal from his last planned fight due to a panic attack. Nelson has already beat Struve, but watching him go toe to toe with Overeem could be interesting. He's more than capable of knocking the big Dutch fighter out, but Overeem is also an elite K-1 level striker, something that Mark Hunt was as well, and look how that turned out. Overeem is coming off a loss to Big Ben Rothwell and is 1-3 in his last four. Win or lose this is a fight Nelson could take.