The bigger they are, the harder they fall.
In the case of the PFL: Battle of the Giants main event Saturday, Francis Ngannou took height out of the occasion.
At Kingdom Arena in Riyadh, Saudi Arabia, Ngannou (18-3) pounded Renan Ferreira (13-4) into unconsciousness with ground-and-pound punches from back mount for a knockout stoppage at 3:32 of Round 1.