Sagetdao Petpayathai is an animal. 

The Muay Thai legend crossed over into the world of MMA in March 2017 at ONE Championship: Warrior Kingdom, and more violence followed. 

There, he wiped out Kelvin Ong via first-round knockout, building anticipation for his sophomore effort at ONE Championship: Shanghai Sept. 2. 

Petpayathai did it again. 

Facing Mahmoud Mohamed, Petpayathai landed one of the most vicious standing elbows you'll ever see in MMA. 

Somewhat hilariously, Petpayathai ran away following the blow, thinking the fight was over. The referee allowed it to go on, however, prompting a scramble back for the finish.  

Enjoy the clip, embedded below, then catch the full event replay, coming soon to FloCombat.com for U.S. viewers. 

[tweet url="https://twitter.com/FloCombat/status/903940138035810304" hide_media="0" hide_thread="1"]