Fábio Nascimento, commonly known as Fábio "Negão" is a Brazilian jiu jitsu black belt under Moises Muradi, who is widely recognized as one of the best competitors of the 2000's decade, a period in which he earned numerous titles and defeated many big names of the sport, including Ronaldo Souza, Demian Maia, Roger Coelho to name a few. Nascimento is also a highly regarded BJJ referee as well as a former professional mixed martial arts (MMA) fighter.