He also studied Judo , Thaiboxing , Wrestling and Shooto extensively .
Martijn de Jong is a BJJ , Karate and Jiu Jitsu black belt with more than 26 years experience .
Martijn de Jong also studied Judo , Thaiboxing , Wrestling and Shooto extensively .
Martijn de Jong is a BJJ , Karate and Jiu Jitsu black belt with more than 26 years experience .