Earlier this week Yamanaka stepped up his preparation for the bout with Nery as he took part in a 4 round sparring session, sharring the ring with the Filipino pairing of Michael Dasmarinas (25-2, 16) and Glenn Suminguit (19-3, 10).
The sparring saw Yamanaka tweak his usual style, with the heavy handed southpaw looking to make adjustments in training to prepare the dangerous and heavy handed Nery.
Although it was clear that Yamanaka was tweaking his style it's always clear that he's not showing his whole hand, and he certainly has a lot more to do before ebing ready for the Mexican. He will however sharpen up significant by working with the very talented Dasmarinas, who is really an under-rated with the potential to go a very, very, long way with his career.
(Image courtesy of boxingnews.jp)