Antonio Díaz (boxer)
José Antonio Díaz (born June 13, 1976) is a Mexican professional boxer. He's the former International Boxing Association light welterweight and WBO Latino light middleweight champion. Antonio is the brother of boxing trainer Joel Díaz and former IBF lightweight champion Julio Díaz. Professional career. Among his 11 title defenses, Díaz holds wins over champions like Cory Spinks, Ivan Robinson, Micky Ward, Ahmed Santos, and Omar Gabriel Weis. His only losses have been to Juan Lazcano, Victor Ortiz, Shane Mosley and Antonio Margarito.