13-year-old Yu Zidi sets Asian Games record to win women's 200m butterfly in Tokyo

Chinese swimmer Yu Zidi, 13, set an Asian Games record of 2min 05.08sec to win the women's 200m butterfly in Tokyo on Sunday, the first full day of competition. The time secured the gold and capped the first major title of her young career.

Yu, who turns 14 next month, said after receiving her medal: "It was only so-so." She became the youngest medallist in swimming world championships history last year when she took home relay bronze aged 12, and the win in Tokyo comes less than two years out from the Los Angeles Olympics.

Swimming was one of three sports staged in Tokyo, with the remainder of the Games taking place in Nagoya and Aichi prefecture. China claimed six of the seven swimming titles on day one in Tokyo.

The Games were officially opened on Saturday by Emperor Naruhito, and athletes will compete across more than 40 sports before the event closes on 4 October. Organisers have said the Games carry 2,028 Olympics qualification places.

Organisers face accommodation challenges after deciding not to build a traditional athletes' village to save money; more than 11,000 athletes and 6,000 officials are being housed in a mix of temporary container-style huts, hotels and the Costa Serena cruise ship. Japanese organisers dealt with complaints about accommodation and a shortage of rooms in the buildup to the Games.

The International Olympic Committee president, Kirsty Coventry, called the temporary huts "beautiful" on Sunday after looking around, but conceded they were "a little tighter" than similar accommodation at the Milan-Cortina Winter Olympics this year.

An incoming typhoon soaked Tokyo on Sunday and could cause further disruption. The Tokyo venue hosting equestrian was closed because of the weather and the competition is now due to start on Tuesday, a day later than originally planned; the full force of Typhoon Dujuan was not expected until Monday, with Tokyo forecast to face strong winds and heavy rain while Nagoya was not in the storm's immediate path but was expecting wet weather.

In other results, Iran beat China 79-70 to win men's basketball bronze and South Korea defeated Japan 67-57 to take basketball gold. In women's T20 international cricket, Smriti Mandhana became the highest run-scorer as India crushed Bangladesh by 114 runs in the semi-finals, with Shafali Verma hitting her maiden hundred; India will face Sri Lanka in Tuesday's final, unless the weather intervenes.