Japan's Ryuya Yamanaka defended his WBO minimumweight crown for the first time on Sunday, defeating Mexico's Moises Calleros by technical knockout.The fight was the last of two world title fights at Kobe's Portopia Hotel, where Japan's Reiya Konishi failed in his first attempt at a world title.Calleros, the fourth-ranked contender, suffered a cut around the nose from a wicked right in the second round, and gradually got the worse of the 22-year-old champ's sharp combinations.By the eighth round, Calleros had little fight left in him and then threw in the towel. Yamanaka, who won the title l…READ FULL ARTICLE
