Many in boxing feel that Ioka himself moved up from Minimumweight to Light Flyweight last year so that the door could be opened to Miyazaki claiming a world title. Whether this was right, or wrong, is up for debate though Ioka's move certainly did help Miyazaki move into the world level.
Prior to the door being opened to a world title fight Miyazaki had himself forged a respectable career having already claimed the Japanese and OPBF titles at Light Flyweight before dropping down to 105lbs to claim the WBA title.
The unbeaten Miyazaki looks to defend his world title for the second time on Wednesday as he takes on WBA "interim" champion Jesus Silvestre (27-3, 20), a fighter who is somewhat well known to Asian boxing fans due to losing efforts in both the Philippines, to Donnie Nietes, and Thailand to Paipharob Kokietgym.
Silvestre is still a young fighter himself, though he also appears to be an experienced one with fights against Nietes and Paipharob being just the ice cap of a deep career. Sure the Mexican youngster hasn't scored any really world class victories but he has beaten several decent opponents like Yader Escobar, Carlos Velarde, Walter Rojas and former Japanese champion Takuya Mitamura, in fact all 4 of those victories have come by stoppage.
Interestingly both men share an opponent in the form of Velarde, who was stopped by both men in the 5th round. For Silvestre, who beat him in 2009, it was a step up for both men for Miyazaki however it was his first world title defense just a few short months ago.
Although Silvestre has had a successful career he has lost to his sole world level fighter he has faced in Nietes. Sure that loss will have been a major learning experience but he's not really been facing the men who will help steady him for genuine world level. He's been facing good fighters, but very few have been proven world level fighters.
From the footage available Silvestre does look like a decent fighter. He has shown good movement, a no-fear attitude, nice boxing fundamentals and against Paipharob he showed an impressive work rate with some excellent pressure work late in the bout.
For those who saw Silvestre's bout with Mitamura, it's obvious just how good his pressure, though of course Miyamura is no Miyazaki and the champion has likely seen the same highly level pressure work in sparring from various sparring partners.
Miyazaki will know what to expect from Silvestre, and has the network at the Ioka Gym to help prepare him for the fight. With that in mind we do have to think that Miyazaki has got his preparation right and will go to the body of Silvestre to slow him down.
If Silvestre can see off the power of Miyazaki, and the body shots especially, then we really could be in for something special. Both guys can fight hard, and if they can each take each other shots then we've got to be honest this will see Miyazaki outshining Ioka's bout against Kwanthai Sithmorseng on the same card.
We'll take Miyazaki to come out victorious but really this will not be easy for the champion nor will it be boring for fans.