Kazuto Ioka's career is by far the most impressive on this list; he is one of the boxers of the 21st century.
Unfortunately, he couldn't; he was sanctioned by the JBC for failing to make weight in his last WBC defense. When you're licensed in Japan and sanctioned by the JBC for that, you generally move up two weight classes. And then at 115 lbs, he would have been even more blocked because the 4 kings shared the WBC belt, the IBF was taken by Jerwin Ancajas and he was not ranked, the WBO belt was in the hands of Ioka who was a stylistic nightmare for him.
