At the 2025 World Aquatics Championships in Singapore, Mexican diver Osmar Olvera made history by winning the gold medal in the men's 3-meter springboard event, ending China's longstanding dominance in the discipline. At 21 years old, Olvera has become Mexico's most decorated diver with eight career medals at world competitions. His victory was widely recognized, including congratulations from Mexico City Mayor Claudia Sheinbaum. Another Mexican diver, Randal Willars, secured a bronze medal in the men's 10-meter platform, marking the first time since 1982 that China did not reach the podium in that event. Alongside Gabriela Agúndez and the twin sisters Mía and Lía Cueva, the Mexican diving team achieved a total of seven medals, contributing to Mexico's best-ever performance at the World Championships with eight total medals in diving. The medal-winning athletes returned to Mexico City to a warm reception. In swimming, American Katie Ledecky won the women's 800-meter freestyle, defeating Canadian Summer McIntosh, who secured her fourth gold medal at the championships and was named one of the best swimmers of the event alongside French swimmer Léon Marchand. Marchand dominated the men's 400-meter individual medley, winning gold and adding to his previous world title in the 200-meter individual medley. He also helped France win a silver medal in the 4x100-meter medley relay. The French team, led by Marchand and Maxime Grousset, achieved notable success, with Grousset becoming the most decorated French swimmer in long-course World Championships history. The championships featured strong performances across disciplines, with Mexico's diving achievements standing out as a highlight of the event.