Mollie O'Callaghan won gold in the women's 200m freestyle at the world championships in Singapore on a Wednesday night. She finished in 1:53.48.

What happened?

O'Callaghan's victory was a significant one, coming after a long break and injury. She was thankful for her coach Dean Boxall's guidance.

Why it matters for Mollie O'Callaghan

The win marks a major comeback for O'Callaghan, who had been struggling with injury and illness. She expressed gratitude for her team's support.

O'Callaghan's teammate Jamie Perkins finished seventh in the same event with a time of 1:56.55.

What comes next?

Kyle Chalmers laid down a strong marker for the men's 100m freestyle final, finishing fourth fastest in the semi-finals with a time of 47.36 seconds. American Jack Alexy topped the semi-final times with 46.81 seconds.

Harrison Turner won bronze in the men's 200m butterfly, setting an Australian record of 1:54.17. The 21-year-old former cross-country athlete was thrilled with his unexpected medal.

The Australian mixed 4x100m medley team finished fifth, while French megastar Leon Marchand broke the men's 200m medley world record with a time of 1:52.69.

Mollie O'Callaghan's win is a significant boost to the Australian team, who have had a mixed bag of results at the world championships so far. Sam Short's withdrawal from the men's 800m freestyle final due to illness was a disappointment, but O'Callaghan's gold has lifted the team's spirits.

The world championships continue in Singapore, with more events and medals up for grabs. Mollie O'Callaghan's victory has set her up for a strong rest of the competition.