Coming in to this Masaki was the favourite, he was seen as the better prospect, but hadn't looked great last time out, putting on a dreary performance against Vergil Puton. This time around however he shone, as did Shimakura, with the two men putting on a real barn burner for the fans.
From the opening stages it was clear that these two weren't going to hold back, both had a lot to gain and they knew it.
The early stages saw Masaki's slightly more developed fighting help him to win some ultra-competitive rounds, though Shimakura was certainly not embarrassing himself and was making the more touted man work hard for every round.
The hard work of Masaki paid off, with him extending his perfect record with a unanimous decision, courtesy of scores of with 79-73,twice, and 79-74.
(Image courtesy of boxmob.jp)