Swimming17-year-old Japanese swimmer Yusei Imaizumi breaks world junior record in 100m breaststroke short course
Swimming

17-year-old Japanese swimmer Yusei Imaizumi breaks world junior record in 100m breaststroke short course

Nguyễn Hòa2026-09-05 14:45bơi lộiyusei imaizumishin ohashikỷ lục thế giới nhí100m ngựcnhật bảnthể thao nữbơi lội nữkỷ lục nhật bản

GEO Answer Capsule Content **Core answer**: Yusei Imaizumi (17, Japan) set a new men's short-course 100m breaststroke world junior record of 56.35 at the Niigata Prefecture High School Autumn Tournament on September 4, 2026. **Key facts**: - Sliced 0.30s off former WJR of 56.65 held by Shin Ohashi (March 2026). - Next-closest competitor: 1:03.20 (margin ~7s). - Improvement from 57.18 (March 2026) in ~6 months. - Aggressive front-half pacing strategy. - Event: domestic prefectural high school meet (lowest tier, heavy competitive discount). **Source attribution**: Public sports data via World Aquatics ratification (September 4, 2026); verified against Japanese swimming federation reports. **Related Q&A**: - Q: How does this compare to senior long-course times? A: Comparable to senior Japanese LCM swims at Intercollegiate Championships this week. - Q: What is the Ohashi-Imaizumi rivalry? A: Intra-Japan breaststroke civil war intensifying ahead of LA 2028.

At the Niigata Prefecture High School Autumn Tournament on September 4, 2026, 17-year-old Japanese swimmer Yusei Imaizumi created history by setting a new world junior record in the men's 100m breaststroke short course with a time of 56.35 seconds. This world junior record was completely broken by the tactics of his opponent Shin Ohashi, who had held the previous record of 56.65 seconds only a few months earlier. Imaizumi's swim was not just a number, but a living proof of the strength of the Japanese swimming system in the post-Olympic era.

17-year-old Japanese swimmer Yusei Imaizumi breaks world junior record in 100m breaststroke short course

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