On September 23, 2026, at the Asian Games in Tokyo, China's 13-year-old swimmer Yu Zidi won the 400m individual medley in an Asian Games record time of 4:28.56, securing her third gold medal of the competition. She had previously won the 200m butterfly and 200m individual medley, also in record times. Yu finished nearly four seconds ahead of silver medallist Ke Wenxi of China, with Japan's Mio Narita taking bronze. Her performance is the fourth-fastest in the world this year, and she is considered a strong contender for the 2028 Los Angeles Olympics.
We’ll perform a deep-dive analysis of all sources and publicly available external materials, then prepare a structured timeline of events, an in-depth report explaining the background and context, and multiple perspectives.