James Magnussen produced another sizzling 100m freestyle swim on the opening night of the BHP Billiton Aquatic Super Series at Challenge Stadium tonight.
Australia has dominated the event, which pits them against China, Japan, South Africa and Brazil, with $500,000 on the line.
Magnussen took out his pet event in a time of 47.59, beating the 47.94 he produced at the WA State Championships last week and the 47.73 he swam at the Victorian Open Championships a fortnight ago.
Rising star Cameron McEvoy came in second with a quick 48.19, with China's Zetao Ning (48.41) third.
World champion Cate Campbell also took out the women's 100m freestyle for Australia with the fastest time in the world this year of 53.08, with sister Bronte finishing just behind for second.
Former West Australian Sally Hunter claimed the 100m butterfly for Australia with 1.08 ahead of countrywoman Leiston Pickett.
World champion Christian Sprenger was upset in the 100m breaststroke by Japan's Yasuhiro Koseki, who took it out in 59.94, with Brazil's Felipe Lima third.
Youngster Madeline Groves took out the 200m butterfly in her senior debut on the Australian team, while Ashley Delaney was the first to the wall in the 50m backstroke.
Bronte Barratt won the 400m freestyle from South African Karin Prinsloo and fellow Australian Kylie Palmer.
Earlier, Australia set a world record of 3.46.52 in the 4x100m mixed medley relay.
Delaney led off in the backstroke, with Daniel Tranter taking the breaststroke leg, golden girl Alicia Coutts doing the butterfly and Emma McKeon bringing it home with the freestyle to take the win in the new event ahead of China and Japan.