The 31-year-old Russian dethroned champion and heavy favorite Nemkov to claim the PFL heavyweight title Saturday in Dubai. Bilostenniy (16-4) found himself in dire straits in the first two minutes when Nemkov (20-3) took him down, moved to mount and threatened with a belly-down armbar. Beyond that, though, the challenger's physical advantages began to dictate the action, keeping former light heavyweight Nemkov perpetually on the back foot as Bilostenniy marched him down.