Nasukawa’s big TKO

Tenshin Nasukawa needed nine rounds to do what a lot of people were not sure he could do at full world level in boxing: break down Juan Francisco Estrada and force a technical knockout in Tokyo on April 11. The win came in a World Boxing Council bantamweight title eliminator, which means Nasukawa now moves into mandatory-challenger position for Takuma Inoue’s belt. (boxingscene.com) (bigfightweekend.com) That result is bigger than the record line of 8 wins and 1 loss suggests. Nasukawa turned professional in boxing only in April 2023 after becoming a star in kickboxing, so he reached a former two-division boxing world champion in just his ninth pro bout. (boxrec.com) (wbcboxing.com) Estrada was not a faded journeyman brought in to lose. He entered at 45 wins, 4 losses and 28 knockouts, and the World Boxing Council had him ranked No. 1 for this eliminator while Nasukawa came in at No. 2. (fightnews.com) (boxrec.com) The timing matters too. Nasukawa was coming off the first loss of his boxing career, a unanimous decision against Takuma Inoue for the vacant World Boxing Council bantamweight title in November 2025, so this was not a slow rebuild against soft opposition. It was a straight jump back into another high-risk fight at 118 pounds. (fightnews.com 1) (fightnews.com 2) What changed on Saturday was that Nasukawa looked less like a crossover experiment and more like a real contender who can control a veteran over rounds. Fight reports said his body shots were backing Estrada up from the opening round, and by the end of round nine the stoppage was called at 3:00. (bigfightweekend.com) (badlefthook.com) That body work matters because Estrada built his reputation over nearly two decades by handling pressure, trading in close, and making elite opponents work every minute. For a 27-year-old with fewer than 10 pro boxing matches to wear him down instead of just trying to out-speed him is a different kind of statement. (wbcboxing.com) (fightnews.com) The venue was Ryogoku Kokugikan in Tokyo, a building better known to many fans as a sumo arena, and the event was streamed as Prime Video Boxing 15. That gave Nasukawa a home-stage showcase in Japan against a Mexican name that boxing fans everywhere recognize. (primevideo.com) (boxingnews.jp) Now the story circles back to Takuma Inoue. The World Boxing Council had already framed Nasukawa-Estrada as a final eliminator for Inoue’s bantamweight title, and post-fight reports say Nasukawa is now the mandatory challenger after losing their first meeting by unanimous decision last year. (wbcboxing.com) (bigfightweekend.com) So the next question is not whether Nasukawa belongs in major fights. The next question is whether this nine-round stoppage over Estrada was the bridge between “talented newcomer” and “second shot at a world title,” because on April 11 he moved himself right back to Takuma Inoue’s door. (boxingscene.com) (bigfightweekend.com)