Rene Santiago Outpoints Kyosuke Takami To Unify Titles

The Ryogoku Kokugikan has hosted all manner of organised mayhem over the years, but there is something especially unforgiving about a world-title fight in a building designed for sumo. Kyosuke Takami, the unbeaten WBA light flyweight champion, tried to turn it into a night of straight-line pressure and clean, young power. René “Chulo” Santiago turned it into a lesson in angles, timing, and the small cruelties of ring generalship, taking a split decision over 12 rounds to unify the WBA and WBO belts at 108 pounds.

When the scores were read, there was the familiar, awkward pause that comes with a split verdict: 116-112 for Takami on one card, then 115-113 and a wide 117-111 for Santiago on the other two. The Puerto Rican lifted both arms anyway, as if daring anyone to argue that the cleaner work and the cleverer feet hadn’t carried the day.

Takami began like a fighter determined to make the ring feel smaller than it was. He came straight down the middle behind a neat jab, trying to set the rhythm with a right hand that followed it like a shadow, and he mixed in left hooks to the body in the hope of dulling Santiago’s legs before they could become a problem. The Japanese champion looked the more polished early, calm and respectful in the way he went about his business, but Santiago had not travelled to Tokyo to play the part of a polite opponent. He gave ground only to steal it back, darting in and out and changing the distance just as Takami thought he had it solved.

Santiago’s best work arrived when Takami tried to tighten up. Each time Takami edged forward with that jab-right-hand march, Santiago would slide a half-step off the line and whip straight right hands over the top of the guard, the sort of shot that looks simple until you are the one wearing it. The champion’s supposed power edge was there on paper, but Santiago’s movement and timing did a fine job of turning heavy intentions into glancing contact. Takami was busy; he was committed, but his flow kept getting interrupted by punches he didn’t see coming until they had already landed.

There was an honest competitiveness to the middle rounds, the kind that doesn’t always show up in the noise but does show up in the quality of the exchanges. Takami’s body work was not decoration; he kept trying to make Santiago pay for every escape route. Santiago, though, was choosing his moments well—calculated aggression, rather than reckless raids—and when he decided to step in, he did it with purpose. He was particularly effective with that straight right hand, spearing it through and over Takami’s guard in bursts that scored cleanly and, more importantly, made Takami hesitate before throwing the next combination.

Neither man scored a knockdown, though there was a moment late in the ninth when the crowd briefly stirred, and the eye was tempted. Santiago stumbled after an exchange, but it was correctly ruled a slip, and the action moved on without theatre. It suited the fight, really: not a night for melodrama, but a night for the sort of detail that wins rounds—who is making who miss, who is landing first, and who is making the other man reset his feet.

As they moved into the championship rounds, Santiago briefly leaned back into a more mobile style, perhaps with the sensible instinct to protect a lead, perhaps simply because twelve rounds in a tight, fast weight class makes everyone honest. That shift gave Takami one of his best patches of the fight. He enjoyed a big tenth round, using the jab to set up combinations to head and body, and he looked more aware defensively, too, causing Santiago to just miss with counters that had landed earlier. For a few minutes, the bout had the feel of a champion trying to drag a decision out of the hands of the judges by sheer insistence.

The eleventh was fought at a pace where neither man wanted to blink first. Takami opened brightly, hooking upstairs, bouncing in with renewed intent, and forcing Santiago to decide whether he was going to stand his ground or keep giving ground. Santiago did both, which is often the most annoying answer of all: he would plant his feet long enough to fire a right hand to the body, then immediately return to lateral movement before Takami could unload. Takami kept digging to the ribs and then coming back up top with the left hook, trying to make the exchanges add up on the scorecards even if they weren’t producing a single decisive moment. Santiago took the shots well and answered with a left hook-right hand late in the round, a reminder that he wasn’t simply there to run off the clock.

The final three minutes had the look of a man chasing and a man managing, which is usually the shape of a close fight when both fighters suspect it might not be close on the cards. Takami unloaded with determination, throwing power shots straight down the middle and trying to force the kind of exchanges that make judges abandon their pencils and just watch. Santiago’s priority was to make him miss and make him pay, and he had enough success to stop Takami building the sort of late surge that wins you a split decision on a sympathetic night. When Santiago did choose to trade, he landed with enough conviction to make Takami take a step back—small moments, but at this level, small moments are the currency.

At the bell, both raised their arms, both looked convinced, and then they embraced in the centre as if acknowledging the truth: it had been competitive, it had been clever, and it had demanded patience from everyone watching. In the end, it was Santiago’s superior lateral movement, his defensive discipline, and the accuracy of those right hands that persuaded two judges to send the belts back across the Pacific with him. Takami suffered his first professional defeat, while Santiago capped a remarkable run in 2025 by adding the WBA title to the WBO belt he brought into Tokyo.