September tenth in Tucson, AZ. WBO flyweight title on the line, first defense of Nakatani. Acosta is his #1-ranked mandatory. The boricua former WBO light fly champ is giving up 3" in height and 3½" in reach and has two more losses than unblemished Nakatani, but has also fought the largely better competition and has a robust 87.5% kayo ratio (95% of his W column). The southpaw champion, prior to his catchweight bout (serving as informal eliminator) with Melindo, had fought mostly Pinoy road-warrior journeymen and middling Japanese domestic opposition.