WBO super flyweight champion Naoya Inoue and WBC light flyweight champion Ken Shiro both easily retained their titles on Saturday. (photos by Naoki Fukada)

Inoue demolished France’s Yoan Boyeaux in a third-round technical knockout to improve to 15-0 in his career with 13 knockouts. Ken Shiro, whose real name is Kenshiro Teraji, improved to 12-0 with a fourth-round TKO of Panama’s Gilberto Pedrozo at Yokohama Cultural Gymnasium.

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Boyeaux, who hadn’t lost a fight since January 2012, had no answers for a series of punishing left-handed body blows from Inoue, who defended his title for the seventh time.

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“My left has been a strength of mine,” said Inoue, who said he would seek either a super flyweight unification title or perhaps try moving up a class to bantamweight.

“I have a lot of options. I’m looking forward to something new, including maybe a new start as a bantamweight.”

Boyeaux’s record fell to 41-5.

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Earlier, Shiro made short work of Pedrozo. The world champ kept his opponent from coming close enough to land some ferocious right crosses and started cautiously with left jabs before landing combinations as the second round came to a close.

Pedrozo was staggered in the fourth round and was given a standing eight count before Shiro was quickly on him again, forcing the referee to stop the fight.

“Normally, I’m a slow starter,” Shiro said. “I wanted to up the tempo a little bit. I just tried to apply whatever pressure I could.”

Shiro’s sixth career win by knockout left Pedrozo with an 18-4 record.

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