By Elisinio Castillo

Edion Arena, Osaka, Japan - In an upset, undefeated Japanese prospect Shun Kubo (12-0, 9 KOs) got off the deck to stop Nehomar Cermeno (26-6-1-1NC) after ten rounds of action to capture the WBA "regular" super bantamweight world title.

Kubo becomes one of three world champions under the WBA at 122-pounds. WBA "super" champion Guillermo Rigondeaux and WBA "interim" champion Moises Flores will collide on June 17th, as part of the Andre Ward vs. Sergey Kovalev undercard in Las Vegas.

Kubo would have to eventually fight the Rigondeaux-Flores winner, as the WBA wants to eliminate the issue of multiple titles in each weight division.

Kubo's win was surprising, because the 27 year old fighter had never faced anyone of note. Cermeno, 37 years old, was on a solid six fight win streak.

At the time of the stoppage, Cermeno was winning the fight on two scorecards with tallies of 95-94 and the third had Kubo up 95-94.

The much taller Kubo started strong and gave Cermeno fits, but the veteran adjusted and came back strong as the fight played out - including a knockdown of Kubo in the seventh round. Cermeno was unable to finish him off and Kubo began to work his way back into the fight.

After ten rounds, Cermeno indicated to his corner that he was done and the fight was stopped. It's not exactly clear if there was some injury or severe fatigue that forced Cermeno's hand to pack it in.

IN OTHER RESULTS: Rising prospect Tim Tszyu (3-0, 2 KOs), who is the son of former world champion Kostya Tszyu, had his third professional fight at the Doltone House, Sylvania Waters, New South Wales, Australia - and picked up a third round TKO over Ben Nelson (2-3).

Tszyu, who turned pro last December, is scheduled to fight again on May 6th in Auckland as part of the Joseph Parker vs. Hughie Fury undercard and then on May 27th in Queensland.