Of the combat sports, one of the most brutal is undoubtedly Muay Thai. It's known as the Art of Eight Limbs: 2 Legs, 2 Knees, 2 Fists AND 2 Elbows. One of the favored positions for Muay Thai fighters is the Clinch where Takedowns, Knees and Elbows can be effected.
I saw a video on Facebook and forgot which page/group/friend it was from. I don't know the fighters. I took the liberty of making 6 GIFs from the video which featured a vicious Elbow Knockout from the Clinch.
If you know the fighters/fight, please let me know. It is deeply appreciated!
WARNING! Not for the faint of heart!
1 realtime, 1 slomo, 1 slomo side view
Was that a vicious Elbow KO or what?