MMA fights can get pretty brutal even within the confines of the rules. There's definitely no place for this!

After knocking down his opponent, for some reason this guy decided to jump up with a swift stomping kick to his head!

In his defense, he knew immediately what he had done, and seemed remorseful even in the seconds after it happened.

Still not sure what his plans were when he started jumping, if it wasn't to land on this guy's head, though.