 He is one of an elite group who have had the privilege and honor of teaching Jiu-Jitsu at the Gracie Humaitá Academy.In May, 2008, Professor Xavier was promoted by Royler Gracie to the rank of third degree black belt in Gracie Jiu-Jitsu.He is currently (2014) a 4th degree promoted by Rickson Gracie and recognized by Jiu-Jitsu Global Federation (JJGF).