• Summer McIntosh wins her fourth gold medal at the World Aquatics Championships in Singapore.
• The U.S. women's team sets a world record in the 4x100m medley relay.
• China's 12-year-old Yu Zidi finishes fourth in multiple events, narrowly missing medals.
• Leon Marchand of France wins the men's 400m individual medley title.
• Russian athletes compete under a neutral flag, earning medals in several events.

Summer McIntosh capped a remarkable performance at the World Aquatics Championships by winning the women’s 400 metres individual medley title, her fourth gold medal of the tournament. McIntosh finished with a time of 4:25.78, leading by more than seven seconds over joint silver medallists Jenna Forrester of Australia and Japan’s Mio Narita, who both clocked 4:33.26. This victory solidified McIntosh's place in history as only the third swimmer to win five individual medals at a single world championship, joining legends Michael Phelps and Sarah Sjostrom, according to Reuters, SCMP, and Dawn.

The U.S. women's team made headlines by setting a new world record in the 4x100m medley relay, finishing the race in 3:49.34, which surpassed their own previous record set during the Paris Games. This performance helped the U.S. secure nine gold medals overall, finishing first in the medal table, one gold ahead of Australia, with France taking third place and Canada fourth, all influenced by McIntosh's stellar results, according to Reuters, SCMP, and Dawn.

China's 12-year-old prodigy Yu Zidi narrowly missed out on a medal again, finishing fourth in the 400m IM with a time of 4:33.76. This was not her only near miss, as she had also placed fourth in the 200m medley and 200m butterfly events. Despite the disappointments, Yu managed to secure a bronze medal as a reserve in the 4x200m freestyle relay, showcasing her potential in international competitions, as reported by Reuters and SCMP.

France's Leon Marchand secured victory in the men’s 400m individual medley, clocking a time of 4:04.73, after a slow performance in the morning heats almost prevented him from qualifying. This championship saw him reaffirm his status by also breaking the world record in the 200m individual medley earlier in the week. The success of both McIntosh and Marchand highlighted a strong presence in the competition, according to Reuters and SCMP.

Moreover, Russian swimmers returned to competition under a neutral flag and made an impact by winning gold in the men’s 4x100 medley and several other medals throughout the championship. Kliment Kolesnikov, for instance, took the men’s 50 backstroke title in 23.68, narrowly missing his own world record. Competing under strict conditions allowed them to showcase their talents despite previous exclusions from international events, as noted by Reuters, SCMP, and Dawn.