Werdum, also known as Vai Cavalo (Go horse) started to train at Winner Behring Academy in Porto Alegre, Brazil. Later, he moved to Spain with his mother where he carried on BJJ as his career. When he was just a purple belt he started to teach the art of Brazilian Jiu-Jitsu in Madrid and other cities in Europe. Soon he became a BJJ World Champion, being promoted to the rank of black belt by Master Sylvio Behring three years later. After succeeding in Brazilian Jiu-Jitsu and Submission Grappling, he started his career in MMA.