That supporting bout will see former OPBF Super Flyweight champion Ryo Matsumoto (14-0, 12) battle against world Mexican Luis May (17-8-1, 7) as Matsumoto continues to move towards his first world title bout.
On the scales both men weighed in at 119lbs, a 1lb about the Bantamweight limited but below the contracted weight limit for the contest.
Matsumoto, the much taller man, was ¾lbs lighter than he was last time, though this was the second heaviest weight of his career as he's allowed his frame to fill out following his move to Bantamweight at the start of this year.
The 31 year old May, who is ranked by the WBC, is heavier than he was last time out, when he defeated Oscar Moran for the NABF Bantamweight title, though significantly lighter than he was just 6 months ago when he defeated Albert Pacheco. He's also lighter than he was in his fist to Japan, last Decemeber, when he came up short against Shun Kubo.
For Matsumoto this bout appears to be a possible stepping stone bout before a potential world title bout, and the Ohashi gym youngster does appear confident of picking up a win here and making he most of his long reach and quick jab.
(Image courtesy of Ryo Matsumoto's blog)