Middleweight fighter Justin Barry landed a once in a lifetime knockout on Sunday at Cage Warriors 130 in San Diego, California.

A little over six minutes into his professional MMA career, Barry caught lightning in a bottle and landed an inside crescent kick to the chin of his opponent, Alan Benson, instantly knocking him out and sending him crashing down to the canvas.

Justin Barry puts his opponents lights out with a perfectly executed inside crescent kick

The UFC’s official Fight Pass account tweeted the knockout captioned, “WHAT JUST HAPPENED?!?!”

Here is another angle of the rare crescent kick KO.