Mollie O'Callaghan has pipped fellow Ariarne Titmus to win the gold medal in the women's 200m freestyle at the Paris Olympics.
O'Callaghan thwarted Titmus' bid to become the only swimmer in Olympic history to successfully defend Olympic titles in both the 200m and 400m freestyles.
The 20-year-old O'Callaghan clocked one minute 53.27 seconds in Monday night's final at the Paris La Defense Arena with Titmus (1:53.81) taking the silver medal.
The victory is O'Callaghan's first individual Olympic gold medal, adding to her three relay golds - two at the Tokyo Games three years ago and the 4x100m freestyle in Paris on Saturday night.
Her triumph delivers Australia a fifth gold medal at the Paris Games, including three at the pool.
Burton and Shadow Man ride to second
Meanwhile, equestrian Chris Burton has unexpectedly added another silver medal to Australia's tally at the Paris Olympics.
Burton has ridden to an individual eventing silver for Australia at Chateau de Versailles — on a loaned British horse he's only been riding for five months.
The 42-year-old Queenslander had ditched his show jumping speciality for another shot at eventing this year, and his switch paid off handsomely as he expressed his disbelief at steering new partner Shadow Man to second place.
Toowoomba's Burton, now based in the UK, was third overnight after the dressage and cross country but moved into the silver position after Monday morning's show jumping qualifying round when they had a clear round fractionally outside the time limit.
Silver medallist Chris Burton with horse Shadow Man celebrate during a lap of honour after the medal ceremony for the Eventing Jumping Individual Final on day three of the Olympic Games in Paris. Source: Getty / Kevin C. Cox
It put Burton in sight of Australia's first individual eventing triumph since Matt Ryan on Kibah Tic Toc in Barcelona 1992, as he knew 41-year-old German great Jung and his horse Chipmunk FRH were under the ultimate pressure.
Jung prevailed on 21.80 penalty points, 0.60 clear of Burton. Laura Collett, who'd earlier led Britain to the team title, finished third on 23.10.
Opals fail to make an impression against Nigeria
In women's basketball, the Opals had a disappointing performance in their starting game of the tournament, being outclassed by Nigeria 75-62.
The Australian team were behind for most of the match, giving the ball away 26 times, and the Nigerian team took advantage.
It was an uncharacteristically poor game by the ranked number three in the world Opals, who only had 44.4 per cent from the free throw line, wasting the opportunity to lower the deficit of their defeat.
Alanna Smith provided the most points for Sandy Brondello's team, with 17, in a night that will need to be quickly forgotten by everyone in the Opals camp if they want to keep their hopes of advancing from this group alive.
The men's team will take up the charge on Tuesday, as they go up against Canada for their second game of the tournament, hoping to build up on their win over Spain on day one.
What else is happening?
Victorian boxer Harry Garside has been eliminated from the first round of the men's 63.5kg boxing tournament at the North Paris Arena by Hungarian Richard Kovacs.
Following the loss, the Tokyo bronze medallist said this was the nature of the sport and provided a harsh self-assessment.
"As an athlete you put a lot of expectation on yourself and for the run to be over just like that, I feel like a failure right now," Garside said.
"I really envisioned winning that gold medal for Australia, I really thought I could do it."
The Hockeyroos made a dominant display as they annihilated Great Britain 4-0 in the second game of their tournament and will now play the USA on Wednesday.
