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.

In the two years and nine months since former UFC heavyweight champion Francis Ngannou last fought in an MMA cage, his opponent on Saturday, Renan Ferreira, is 5-1 with five knockouts, including four in the first round.