Siobhan Bernadette Haughey of Hong Kong, China competes in the women's 200m freestyle final at the World Aquatics Championships in Doha, Qatar, Feb 14, 2024. (PHOTO / AP)

DOHA - Siobhan Bernadette Haughey of Hong Kong, China, won her first long-course title in the women's 200m freestyle at the World Aquatics Championships on Wednesday.

The Olympic silver medalist in both the 100m and 200m freestyle at Tokyo 2020 touched the wall first with a time of one minute and 54.89 seconds. Erika Fairweather of New Zealand finished second, trailing by 0.88 seconds, and Australia's Brianna Throssell took the bronze.

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"It's really special, and it means so much to me, but I think there's a lot to learn. We still have a few months to Paris, so hopefully we can work on those things," said the 26-year-old Haughey.

Gold medalist Siobhan Bernadette Haughey (center) of Hong Kong, China, silver medalist Erika Fairweather (left) of New Zealand and bronze medalist Brianna Throssell of Australia pose during the awarding ceremony for the women's 200m freestyle at the World Aquatics Championships in Doha, Qatar, Feb 14, 2024. (PHOTO / AP)

Siobhan Bernadette Haughey of Hong Kong, China competes in the women's 200-meter freestyle final at the World Aquatics Championships in Doha, Qatar, Feb 14, 2024. (PHOTO / AP)

The United States showcased its dominance in the mixed 4x100m medley relay as the quartet of Hunter Armstrong, Nic Fink, Claire Curzan and Kate Douglass finished in 3:40.22

Australian Sam Williamson also won his first long-course world title in the men's 50m breaststroke with a time of 26.32 seconds. Italy's Nicolo Martinenghi and American Nic Fink finished second and third respectively. 

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In the men's 800m freestyle final, Daniel Wiffen made history by becoming Ireland's first world swimming champion with 7:40.94. Australian Elijah Winnington finished second, trailing by 2.01 seconds, and Italy's Gregorio Paltrinieri secured the bronze.

Japanese Tomoru Honda also claimed his first world title in the men's 200m butterfly with 1:53.88. Italian Alberto Razzetti took the silver in 01:54.65, and Martin Espernberger of Austria finished third in 01:55.16.

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The United States showcased its dominance in the mixed 4x100m medley relay as the quartet of Hunter Armstrong, Nic Fink, Claire Curzan and Kate Douglass finished in 3:40.22.

Australia secured the silver in 03:43.12, and Britain took the bronze in 03:45.09.