The 23-year-old clocked a time of 50.77sec at the Olimpiyskiy Swimming Pool, slicing 0.14 seconds off the previous record set by Australia’s Cate Campbell in November 2015.

It came just a day after Sjöström broke the women’s 50m freestyle world record with a time of 23.10.

Campbell had to settle for the 100m bronze medal in 51.59, while The Netherlands’ Ranomi Kromowidjojo took silver in 51.14.

Sjöström also tasted victory today in the women’s 100m butterfly with a time of 55.70.

Russia’s Svetlana Chimrova was the runner-up in 57.02, followed by Jamaica’s Alia Atkinson in 57.56.

The one other multi-medallist today was Russia’s Vladimir Morozov, who won the men’s 100m medley and 50m freestyle before helping his country to gold in the mixed 4x50m freestyle relay.

The 25-year-old won the 100m medley in 51.04 with compatriot Sergei Fesikov second in 51.78 and Hong Kong’s Kenneth To third in 51.97.

The 50m freestyle was won by Morozov in a time of 20.93 with Poland’s Pawe Juraszek second in 21.25 and Fesikov third in 21.28.

The last final of the day was that in the mixed 4x50m freestyle relay, which Russia won in 1:31.39.

Morozov and Fesikov were joined on the team by Rozaliya Nasretdinova and Veronika Popova.

The Polish quartet of Juraszek, Aleksandra Urbanczyk, Alicja Tchorz and Tomasz Polewka came away with the silver medal in 1:32.93.

Rounding out the podium were a CLB team, made up of swimmers racing for clubs beyond their own nation, in 1:33.11.

The team comprised Roman Shevliakov, Kirill Kiselev, Daria Kartashova and Daria S Ustinova.

Russia also won gold in the men’s 400m freestyle event thanks to Aleksandr Krasnykh’s time of 3:38.85.

Italy’s Gabriele Detti was his nearest challenger in 3:39.02, while Norway’s Henrik Christiansen was the third-place finisher in 3:39.88.

Another country to win more than one gold medal today was South Africa, who claimed victories through Chad le Clos in the men’s 50m butterfly and Cameron van der Burgh in the men’s 100m breaststroke.

Le Clos prevailed in 22.31 with Great Britain’s Adam Barrett second in 22.55. 

Belarus’ Yauhen Tsurkin and the United States’ Tom Shields shared the bronze medal in 22.60.

Van der Burgh, meanwhile, triumphed in 56.30 with Belarus’ Ilya Shymanovich second in 56.40 and Russia’s Kirill Prigoda third in 56.80.

Other winners today included Poland’s Radoslaw Kawecki in the men’s 200m backstroke with a time of 1:48.96 and Australia’s Emily Seebohm in the women’s 50m backstroke with a time of 26.35.

Denmark’s Rikke Pedersen won the women’s 200m breaststroke in 2:19.84, while there were also victories for Spain’s Mireia Belmonte in the women’s 800m freestyle in 8:07.10 and Hungary’s Katinka Hosszú in the women’s 200m medley in 2:04.76.

The next leg of the FINA World Cup is scheduled to take place in Germany’s capital Berlin on August 6 and 7.