Nicholas Meregali of Brazil reacts after winning against Mahamed Santos of Brazil in the men's purple belt open weight finals during the Abu Dhabi World Professional Jiu-Jitsu Championship at First Gulf Bank Arena. Francois Nel / Getty Images
Rodolfo Veiera, in white, of Brazil competes against compatriot Marcos Almeida in the men's black belt open weight finals during the Abu Dhabi World Professional Jiu-Jitsu Championship at First Gulf Bank Arena. Francois Nel / Getty Images
Faisal Al Ketbi of UAE competes with Marcio Andre of Brazil in the men's brown belt open weight finals during the Abu Dhabi World Professional Jiu-Jitsu Championship at First Gulf Bank Arena. Francois Nel / Getty Images
Al Ketbi celebrates after his win at the Abu Dhabi World Professional Jiu-Jitsu Championship at First Gulf Bank Arena. Francois Nel / Getty Images
The Emirati Shefaa Moosa Hassan competes with Amelia Lui of Great Britain in the women's white belt open weight finals during the Abu Dhabi World Professional Jiu-Jitsu Championship at First Gulf Bank Arena. Francois Nel / Getty Images
Gabriela Garcia of Brazil celebrates after winning against Janni Larsson of United States in the women's brown black belt open weight finals during the Abu Dhabi World Professional Jiu-Jitsu Championship at First Gulf Bank Arena. Francois Nel / Getty Images
Brazil's Rodolfo Veiera reacts after losing against Marcos Almeida of Brazil in the men's black belt open weight finals during the Abu Dhabi World Professional Jiu-Jitsu Championship at First Gulf Bank Arena. Francois Nel / Getty Images
Veiera is in the thick of it against Almeida. Francois Nel / Getty Images
Tanya Araujo, in black, of Brazil competes with compatriot Ana Carolina Srour. Francois Nel / Getty Images
Sheikh Mohammed bin Zayed, Crown Prince of Abu Dhabi and Deputy Supreme Commander of the UAE Armed Forces, fifth from left, was at Zayed Sports City. Courtesy of Ryan Carter / Crown Prince Court - Abu Dhabi
Sheikh Mohamed presents a silver medal to Marcio Barbosa, left, from Nova Uniao in Brazil for the male brown adult open weight category. Courtesy of Ryan Carter / Crown Prince Court - Abu Dhabi
Fans get into it, too, at Zayed Sports City. Courtesy of Donald Weber / Crown Prince Court - Abu Dhabi
The UAE's Faisal Al Ketbi prepares to compete in the male brown adult open weight category. Courtesy of Ryan Carter / Crown Prince Court - Abu Dhabi