Morozov stamped his authority on the pool immediately, winning the first of his four medals in today's opening final at the OCBC Aquatic Centre.

The Russian extended his dominance in the men’s 100 metres freestyle event with his seventh consecutive FINA World Cup win.

The 24-year-old finished in 45.92sec as Australian Kyle Chalmers set a junior world record of 46.61 to take the silver medal. 

Another Australian, Brayden McCarthy, finished third with a time of 47.23.

Morozov added his second gold medal in the men’s 100m individual medley, touching the line in 50.70, just short of his world record of 50.30.

Shinri Shioura and Daiya Seto, both of Japan, took second and third respectively with times of 51.93 and 52.05.

The Russian's third and final gold arrived in the final race of the day, the mixed 4x50m relay.

Alongside compatriots Stanislav Donetc, Yuliya Efimova and Daria Ustinova, Morozov swam the fastest 50m leg of the race in 22.54 to steer his country to the gold medal in a combined time of 1min 39.34 sec.

Australia took the silver medal, just over a second behind the Russians in 1:40.97, while the United States rounded off the podium, touching the wall in a time of 1:43.64 to secure the bronze.

Morozov's dominance did not extend to the men's 50m breaststroke, however, where he could manage only the bronze medal.

Brazil’s Felipe Lima topped the standings in a time of 26.19.

South Africa’s Roland Schoeman claimed the silver medal with a time of 26.62, followed by Morozov in 26.85. 

In the women's competition Hungary's Hosszú collected her first medal of the Singaporean leg with victory in the women’s 200m freestyle.

Hosszú, winner of this event at every World Cup competition this year, was victorious once again in 1:53.17.

Australia’s Madison Wilson took the silver medal in 1:54.39 and Hosszú's team-mate Zsuzsanna Jakabos orounded off the top three with a final time of 1:55.40.

Hosszú tsecured her second gold medal in the women’s 100m butterfly.

Denmark’s Jeanette Ottesen led after 50 metres but was unable to hold off the charging Hosszú in the second-half of the race as the Hungarian finished first in a time of 56.02.

Ottesen, meanwhile, was forced to settle for second in 56.08.

Canada’s Katerine Savard, making her 2016 World Cup debut, took the bronze medal in 57.24.

Denying Hosszú the gold medal in the women's 50m backstroke was Australia's Emily Seebohm.

Seebohm clocked a 26.18 to snatch victory ahead of Hosszú, who touched the wall narrowly behind in 26.21.

Daryna Zevina of Ukraine finished third overall with a 26.47.

The top of the podium did not elude Hosszú for long as she then won the women's 200m individual medley alongside Jakabos.

Hosszú claimed her third gold medal of the session with a time of 2:06.25, followed by Jakabos in 2:07.21.

Efimova produced a late surge to rise through the field from sixth place to finish third with a 2:08.17.

A fourth gold medal was then Hosszú's in the women’s 200m backstroke, touching the wall in 2:01.66.

Ukraine’s Daryna Zevina, the current World Cup record holder, finished in second in 2:02.72, followed by Seebohm in 2:03.08.

Elsewhere in today's action, Japan's Daiya Seto won the men's 200m butterfly final in 1:49.53 and the men's 400m individual medley in a time of 4:04.60, while Jamaica's Alia Atkinson finished 0.04 seconds short of her world record to win the women's 100m breaststroke in 1:02.40.

Mitch Larkin of Australia claimed gold in the men’s 100m backstroke in a time of 50.25 and Mykhailo Romanchuk of Ukraine won the men’s 400m freestyle gold medal, touching the wall in 3:40.64. 

Germany’s Marco Koch led the final of the men’s 200 breaststroke from start-to-finish to win in 2:01.41 and South Africa’s Chad le Clos narrowly defeated his compatriot Roland Schoeman in the men's 50m butterfly with a time of 22.33.

Boglarka Kapas of Hungary saw off the competition in the women’s 800m freestyle, posting a final time of 8:17.54, while Ottesen of Denmark produced a time of 24.07 to win the gold medal in the women’s 50m freestyle.