Matt Serra is a legendary figure in the world of Mixed Martial Arts (MMA). He is a former UFC Welterweight Champion and a Brazilian Jiu-Jitsu black belt. He is well known for his impressive grappling skills and his ability to finish fights with submissions
From Wikipedia
Matt Serra is an American former professional mixed martial artist and Brazilian Jiu-Jitsu practitioner. He is a former UFC Welterweight Champion. He is the co-star of Dana White: Lookin' for a Fight and co-host of the official podcast of the UFC, UFC Unfiltered, alongside Jim Norton.