SINGAPORE - Hungary's Olympic champion Katinka Hosszu added another feat to her gilded CV when she cracked the 200-gold mark of the Fina/airweave Swimming World Cup on Friday evening at the OCBC Aquatic Centre.

The 27-year-old did so when she won the 100m butterfly in 1 min 56.02sec. Earlier, she also won the 200m freestyle -her 199th gold. Later in the evening, she clinched the 200m individual medley and 200m backstroke golds too, taking her overall tally to 202.

Hosszu, who won three golds (100m backstroke, 200m and 400m individual medley) at the Rio de Janeiro Olympics, said: "It is pretty crazy to think about that. These numbers are pretty amazing.

"I'm still excited coming every day into the finals session. It just flew by... I'm going to try and add a couple more."

South African Chad le Clos lost out to Japan's Daiya Seto in the 200m butterfly, an event le Clos holds the world record in.

Seto finished in 1:49.53, ahead of le Clos (1:50.29) and team-mate Masato Sakai (1:50.95). Le Clos, however, won the 50m fly race later.

"I knew it was going to be tough coming off a long travel, but I'm glad I bounced back in the 50m fly," said le Clos, who set the world short-course record for the event here in 2013, when the World Cup leg was still held at the Singapore Sports School.

Australia's newly-minted Olympic 100m freestyle champion Kyle Chalmers was also in action. He swam here last year at the Fina World Junior Swimming Championships, winning three golds.

But there was no luck for the 18-year-old this time as he finished second to Russia's Vladimir Morozov in the 100m free.

There was better news for fellow Australians Mitch Larkin and Emily Seebohm, both of whom won golds in the 100m backstroke and 50m backstroke respectively.

The competition, the seventh stop of the Fina/airweave Swimming World Cup series, enters its second and final day on Saturday.