In 1977 , he began training with Rolls Gracie and was awarded his black belt in 1981 .
At the age of four , Mauricio was taken to BJJ academies by his father before he started training with Joao Alberto .
In 1977 , Mauricio began training with Rolls Gracie and was awarded Mauricio 's black belt in 1981 .
At the age of four , Mauricio was taken to BJJ academies by his father before he started training with Joao Alberto .