Christopher “Pitufo” Diaz (23-0, 15 KOs) is proud of his Puerto Rican heritage and is acutely aware of his homeland’s rich fighting history. Diaz, who fights Masayuki Ito (23-1-1, 12 KOs) on Saturday at the Kissimmee Civic Center for the vacant WBO junior lightweight world title, is hoping to become the fifth current male