Mollie O'Callaghan set a new short-course world record in the 200m women's freestyle with a time of 1:49.36.
She earned a $15,000 bonus for the world record and another $15,000 for winning the Triple Crown.
What happened?
Mollie O'Callaghan obliterated a star-studded field to touch in 1:49.36 on Friday.
She swam away from compatriot Lani Pallister, who equalled her personal best of 1:51.75.
Why it matters for Mollie O'Callaghan
The 21-year-old Australian's performance is a perfect tonic for the nation after Ariarne Titmus' retirement.
O'Callaghan, already the holder of five Olympic gold medals, flew out of the blocks and was three quarters of a second up after the first 50m.
She maintained world-record pace throughout, barring the last 50m.
What comes next?
Mollie O'Callaghan will now turn her attention to the 100m free where she could pose a threat to Triple Crown contender Kate Douglass of the United States.
The meet is proving to be hugely successful for Australia with Kaylee McKeown and Pallister scorching their opposition.
McKeown set a short-course world record of 1:57.87 to take out the 200m backstroke.
She also won the 50m with a World Cup and national record time of 25.35.
Pallister made the women's 400 freestyle event hers in a new World Cup record time of 3:51.87.
She produced the third-fastest swim in history, with only American Summer McIntosh and Chinese star Li Bingjie having gone quicker.
Mollie O'Callaghan's first 50m was in 23.62 and she came home in 25.74 to win the 200m freestyle.
Her win has earned her a total of $30,000 in bonuses.
The Australian team is performing well at the swimming World Cup in Toronto.
Mollie O'Callaghan's performance is a highlight of the meet so far.
She is one of the top contenders for the 100m free event.
The 100m free event will be closely watched as Mollie O'Callaghan takes on Kate Douglass.
Mollie O'Callaghan's world record time of 1:49.36 is the fastest time in the event this year.
She is on track to win multiple events at the swimming World Cup.
The Australian team is looking strong with multiple wins in different events.
Mollie O'Callaghan's win is a testament to her hard work and dedication to the sport.