Kình ngư 17 tuổi Nhật Bản phá kỷ lục thế giới trẻ 100m ếch, hé lộ thế hệ vàng mới của bơi lội xứ Phù Tang

core_answer: Yusei Imaizumi, 17, broke the 100m breaststroke short course World Junior Record with 56.35s at the Niigata Prefecture High School Autumn Tournament on September 4, 2026, shaving 0.30s off the previous mark. The record is genuine but was set at a low-tier domestic meet with a ~7-second margin over the field.
key_facts: Imaizumi swam 56.35s, a lifetime best, on September 4, 2026.; He beat the former WJR of 56.65s held by Shin Ohashi (March 2026).; The next closest competitor finished in 1:03.20, a ~7-second gap.; Imaizumi won two golds at Junior Pan Pacs 2026 (100m breast 59.98, 50m breast 27.55).; His previous SCM best was 57.18s in March 2026.
source_attribution: Original report from Niigata Prefecture High School Autumn Tournament; verified against World Aquatics record database | Cross-checked: VuaBong.vn
related_qa: q: Can Imaizumi compete with senior swimmers in long course?, a: His LCM 100m breast time (59.98) suggests strong potential, but senior readiness remains unproven; track his Japan Swim 2027 performance.; q: How does the Ohashi-Imaizumi rivalry affect Japan's LA 2028 hopes?, a: The rivalry breeds excellence; both could be medal contenders, but only one may secure the top national slot at trials.