Joseph Edward Lauzon and Nate Diaz are both American mixed martial artists for what profession? 
Joe Lauzon: Joseph Edward Lauzon Jr. (born May 22, 1984) is an American mixed martial artist competing in the UFC's Lightweight division. Nate Diaz: Nathan Donald "Nate" Diaz (born April 16, 1985) is an American professional mixed martial artist currently competing for the Ultimate Fighting Championship (UFC).
UFC