Nate Diaz, unlike his brother, actually showed up to his superfight this past weekend at the Gracie Open 2012. Diaz's opponent was Osvaldo Augusto Queixinho, a two-time Brazilian national champion who owns a BJJ school in San Jose, CA. Diaz was recently awarded his black belt under Cesar Gracie, but it didn't help him here as he was finished via toe-hold, which looked pretty damn painful.