Olascuaga Stops Kuwahara In 4 To Retain WBO Crown

Anthony Olascuaga has made a habit of travelling light and hitting heavy, and under the lantern glow of Tokyo’s Ryogoku Kokugikan, he did it again, cutting short Taku Kuwahara’s title dream with a fourth-round technical knockout to retain the WBO flyweight championship. The stoppage came at 2:35 of the fourth, with referee Robert Hoyle stepping between them after a sustained burst left Kuwahara pinned up, covered up, and giving nothing back but a brave impression of survival.

There was an edge to the atmosphere from the opening bell because both men fought like they understood what the other was trying to steal. Kuwahara, the home challenger from Yokohama, wasn’t there to admire the belt; he wanted to meet the champion in straight lines and make the night uncomfortable with the right hand. Olascuaga, fighting in Japan again as if it were a second postcode, did what champions do when the challenger fancies a gamble — he made the stake feel too high for the odds.

For all Olascuaga’s flair, his work was built on blunt fundamentals. He was the stronger man in the exchanges and he let Kuwahara feel that strength early, the sort of physical authority that turns a challenger’s confidence into caution without any great drama. Kuwahara had moments when he found his distance and got leverage on straight right hands, and there were flashes where you could see what his corner had been promising: speed, timing, ambition. But those moments came in singles, and against a champion who was landing more often and with more sting, singles become expensive.

Olascuaga’s pressure was patient rather than frantic. He didn’t chase Kuwahara around the ring like a man late for the last train; he walked him down with his feet underneath him, closing exits and forcing the challenger to reset. When Olascuaga let his hands go, the shots arrived in the right order: the kind that first occupy your guard and then start slipping around it. Kuwahara’s best idea was to keep his shape and fire back in the gaps, but the gaps were shrinking.

The finish wasn’t a single lightning bolt so much as a storm that gathered quickly. In the final minute of the fourth round, Olascuaga was dialled in with the left hook and used it to drive Kuwahara back across the ring. Kuwahara ended up trapped in the corner, and that is a difficult place to be against a champion who can punch with both hands and doesn’t waste time asking permission. Olascuaga unloaded right hands around the guard and whipped left hooks in behind them, the kind of sequence that doesn’t always drop a man but can empty him all the same.

Kuwahara did what hurt fighters often do when they’re trying to stay upright: he tried to escape first and fight second. He broke free from the corner, but his gloves were pinned to his face, and he wasn’t returning fire, which is the surest way to invite a referee’s intervention. Hoyle took one look at the lack of response and stepped in, and Kuwahara, for all his toughness, didn’t argue the point. He simply looked like a man who knew the difference between being brave and being rescued.

For Olascuaga, it was another brisk piece of work in a period of relentless activity. This was his fourth title defence in a 17-month reign, and the third time he has defended in 2025 — a pace that is becoming a signature as much as any punch he throws. It also underlined how comfortable he has become fighting in Japan, where half his pro career has now unfolded, and where he continues to look less like a visitor and more like a fixture.

Kuwahara had promised to be the champion’s toughest assignment, and if the ambition was admirable, the outcome was unforgiving. His previous defeats had come against Seigo Yuri Akui, and here he found himself caught in a different sort of problem: a champion who is not merely busy but punishing, and who can turn a competitive moment into a crisis without changing his expression. If there is consolation, it is that Kuwahara did not fold from the first hard exchange; he kept trying to find his right hand until the champion’s strength and accuracy made that search impossible.

Olascuaga left the ring still champion, still active, and still looking like a man who prefers the decisive full stop to a long, argumentative sentence. A fourth-round stoppage is not subtle, but it is efficient, and champions who keep collecting those tend to find that the rest of the division starts speaking a little more quietly.