Today Cesar Gracie awarded Nate Diaz his black belt in Brazilian Jiu-Jitsu. Nate is the younger brother of Nick Diaz, also a black belt under Gracie. @CesarGracieBJJ: @UFC @NateDiaz209 @nickdiaz209 @DiazBrothers209 Congrats Nate on your well deserved Blackbelt! read official Twitter… Diaz is next scheduled to compete at the main event of the UFC on FOX…