Don't blink while watching this video. This KO was was fast you could hear the echo from the starting round bell.

Pro Tip: When fighting, never lead with your head. This is proof that anyone can get caught at any time in the Mixed Martial Arts world. It's insane to think that this ended in 0:02 of the first round, but all it takes is one good clean punch to end a fight. I'm guessing what occurred after the fight was training camps not being very happy with the fight, but this tends to happen a lot in the fighting world. I've seen 7 seconds knockouts in UFC fights, but I think this is going to be a record for a very long time.