Video: Top 10 Scariest Combat Sport Knockouts Ever!

The hard part of combat sports is dealing with the potential dangers of having a serious head injury resulting from a devastating knockout blow. With organizations like the UFC bringing MMA worldwide in almost two decades, stronger drug testing measures and increased safety standards are ways that an organization can protect a fighter.

Slipping a punch or ducking a kick is completely up to the fighter, these are the fighters that were on the wrong end of a nasty KO finish.

Check out the video.