Watch Sergio Moraes tap out Ben Saunders with an arm-triangle choke at UFC Fight Night 137.
Jiu-Jitsu CLINIC!@SerginhoMMA becomes the first man to submit Saunders inside the Octagon! Wow! #UFCSP pic.twitter.com/paEIY9ipQa
— UFC (@ufc) September 23, 2018
