Demian Maia is a Brazilian Jiu-Jitsu black belt and a professional mixed martial arts (MMA) fighter who reached the top of both sports' rankings, particularly in grappling where Maia earned titles such as the World Cup (2002, 2003) and ADCC (2007). In MMA, Demian had title attempts in the UFC's middleweight (April 2010) and welterweight (July 2017) divisions. Demian is also known for having one of the UFC's longest successful submission win streaks (5).