Demian Maia is a 4th Degree Black Belt in Brazilian Jiu-Jitsu and fights as we welterweight for the UFC who is regarded as one of the greatest grapplers in MMA history.

Murilo Bustamante is a 7th Degree Black Belt and numerous World Title holder in Brazilian Jiu-Jitsu and retired Brazilian MMA fighter and former UFC Middleweight Champion; he is one of the founders of the Brazilian Top Team.

Both of them joined Black Belt Magazine for the Fight Back event, a week-long live event featuring some of the best martial artists of today, to raise money for healthcare and medical professionals in the fight against COVID-19.