The Russian karate expert, Ramil Kasumov, recently knocked out an opponent with such force that it took the poor guy a few moments to realise he was knocked out…
It’s a brutal KO, but in fairness to Kasumov, he was quick to make sure his opponent was alright/still alive. Good sportsmanship at it’s finest.
http://www.youtube.com/watch?feature=player_embedded&v=OOyfGJuAdNA#at=35
Even the .gif is mesmerising…