UFC star Sean Strickland has explained that he warned his sparring partner they would be going hell for leather before he landed a headkick KO that went viral on social media.
Strickland was in California to sail when he stopped by a local gym to spar with a kickboxer, and he brutally stopped him late in the session.
The video was viewed hundreds of thousands of times across social media, but Strickland says the only reason it was filmed was that his opponent's coach wanted footage.
