Junior flyweight world titlist Ken Shiro retained his belt for the sixth time with a dominating fourth-round knockout of Jonathan Taconing.

The faster, more powerful Shiro (16-0, 8 KOs), 27, of Japan, known as the “Amazing Boy,” landed punches almost at will against a stationary Taconing (28-4-1, 22 KOs), a 32-year-old southpaw from the Philippines.

In the third round, an accidental head butt opened a bad vertical cut over Taconing’s right eye. Taconing was fading fast in the fourth round when Shiro landed a quick right and a short left hand on the chin that dropped him. Taconing got up quickly, but he was in bad shape and unsteady, and referee Frank Garza waved off the fight at 1 minute.

Taconing was getting his second shot at a world title. In July 2016, he traveled to Mexico and lost a unanimous decision challenging then-junior flyweight titlist Ganigan Lopez, who lost the 108-pound belt to Shiro in his next fight.

Article courtesy of Dan Rafael & ESPN