The work out wasn't the most intentsive from the champion but Yamanaka did look in good shape and looked focused on beating Carlson, who is regarded as a relative no hoper here. The champion looked sharp on the pads and in a short spar, and has seemingly been working hard on becoming more accurate with his shots, almost as if he's realised he's been giving opponents too many chances in recent bouts when he's missed with shots of his own.
Although regarded as a massive favourite against Carlson Yamanakahas seemingly taken his training camp seriously and scouted Carlson, building a gameplan to neutralise the Mexican and continue his reign. If, as expected, he does beat the Mexican he would have regarded his 12th defense and will sit just a single defense behind the long term Japanese record of Yoko Gushiken. Despite that record being a big focus for fans Yamanaka does seem intent on beating Carlson before talking about that record.
(Image courtesy of boxingnews.jp)