In the first final of the day, Chase Kalisz celebrated the eighth consecutive title for the US in the men’s 200 metres individual medley with a time of 1min 55.56sec at the Duna Arena.

Kalisz, the Rio 2016 Olympic silver medallist in the men's 400m individual medley, took the lead in the breaststroke leg and was never in danger until the end.

His main challenger was Japan’s Kosuke Hagino, the silver medallist in 1:56.01.

China’s Wang Shun repeated his bronze medal-winning performance from the 2015 World Championships in Kazan by coming third in 1:56.28.

The US’ second title of the day came in the men’s 100m freestyle, which saw Caeleb Dressel triumph.

The 21-year-old, who already had gold medals to his name in the men’s 4x100m freestyle and in the mixed 4x100m medley, was in control throughout and touched home in 47.17.

Team-mate Nathan Adrian took the silver medal in 47.87. 

France’s Mehdy Metella earned bronze in 47.89, marking his best individual ranking at a World Championships.

Completing a hat-trick of gold medals for the US today was the country’s women’s 4x200m freestyle team.

Victory secured a 13th World Championship gold medal for Katie Ledecky, who anchored the quartet to success in 7:43.39.

The US were second behind Russia after the first 200m, but second swimmer Mallory Comerford recovered and put the team into the lead at the half-way stage.

Melanie Margalis and Ledecky then successfully concluded the work.

The Chinese squad, the fastest in the heats, came away with the silver medal in 7:44.96, while the bronze went to Australia in 7:48.51.

In the women’s 200m butterfly, Rio 2016 Olympic gold medallist Belmonte held off home favourite Katinka Hosszú to secure her first world title. 

The Spaniard touched home for victory in 2:05.26, while Hosszú, the winner of the women’s 200m individual medley, had to settle for the bronze medal behind Germany’s Franziska Hentke.

Hentke clocked 2:05.39 to beat Hosszú by a margin of 0.63 seconds.

Having become Brazil’s first-ever swimming medallist with women's 50m backstroke silver at Kazan 2015, Etiene Medeiros today became the South American nation’s first-ever gold medallist with a convincing win in the same event in 27.14.

China’s Fu Yuanhui, the Kazan 2015 winner, claimed the silver medal in 27.15.

Bronze went to 31-year-old Belarusian Aliaksandra Herasimenia in 27.23.