Rodriguez of Mazatlan , Mexico had previously challenged for a world title in 2012 .
Rodriguez of Mazatlan , Mexico had previously was stopped in 6 rounds by Kazuto Ioka for the vacant WBA junior flyweight title .
Rodriguez of Mazatlan , Mexico had previously challenged for a world title in 2012 but was stopped in 6 rounds by Kazuto Ioka for the vacant WBA junior flyweight title .