Australian swimmer Mollie O'Callaghan's golden touch has continued with an emotional victory at the world championships in Singapore.
O'Callaghan collected gold in the women's 200m freestyle on a Wednesday night at the worlds when Australia's fortunes fluctuated.
Stalwart Kyle Chalmers laid down an ominous marker for the men's 100m freestyle final and rookie Harrison Turner won bronze in the men's 200m butterfly - Australia's first medal in the event at a world titles.