Australia's Mollie O'Callaghan held off world record-holder Ariarne Titmus to win the women's 200m freestyle gold at the Paris Olympics on Monday.
O'Callaghan won in a new Olympic record time of 1min 53.27secs, with compatriot Titmus 0.54 seconds behind and Hong Kong's Siobhan Haughey taking the bronze.
"It's such an honour to be with everyone, and compete against Arnie (Titmus). She is an absolute gun. She races like an absolute beast," said O'Callaghan.
"And it's an honour to train alongside her and have such a great team around us."
Haughey, who won silver behind Titmus in the race in Tokyo, was fastest out and led through the 150m mark before the Australian pair overtook her and went head-to-head over the final stages.
But when it came to the sprint finish O'Callaghan had more than her teammate, leaving Titmus in her wake as she touched first.
The pair have jousted at the top of the sport in the past two years – Callaghan is the former world record holder but Titmus set a new mark of 1:52.23 at the Australian trials in June.
Titmus won the 400m freestyle gold in Paris earlier this