• SA on search for third chief executive in less than two years
• National championships start on Monday on the Gold Coast

Swimming Australia is searching for another new chief executive after the shock resignation of Eugenie Buckley with immediate effect on Friday.

With less than 18 months to go to the Paris Olympics and the national championships starting on Monday on the Gold Coast, Buckley has left “to take up opportunities outside of the sport”, after taking over the top job in swimming in late 2021.

Australian Associated Press contributed to this report

• Mollie O’Callaghan leads mixed relay team to WR time in 4x100m
• Kaylee McKeown takes gold in 200m backstroke at world championships

Mollie O’Callaghan has made it a hat-trick of golds while leading the mixed 4x100m relay quartet to Australia’s first global landmark at this year’s world swimming championships.

And Kaylee McKeown has underlined her standing as one of Australia’s marquee swimmers with her first world championship triumph in the 200m backstroke in Budapest on a milestone penultimate day for the Dolphins.

• Australian ‘wrestled with myself’ before airing views
• Maddie Groves and trans advocacy groups criticise ruling

Australian Olympic champion Cate Campbell has supported Fina’s vote to restrict transgender women from taking part in elite female swimming competitions, saying she had “wrestled long and hard” with her views on the polarising issue before concluding that fairness is a “cornerstone” of professional sport.

Fina’s historic decision has also elicited criticism; the policy shift has been slammed by transgender advocacy groups and swimmer Maddie Groves described it as “discriminatory and unscientific”.

• Titmus wins 200 metres freestyle at championships in Adelaide
• Olympic champion targeting Federica Pellegrini’s benchmark

Ariarne Titmus is happy at swimming fast again but annoyed she cannot yet break the longest-standing women’s world record. Titmus won the 200 metres freestyle at the Australian championships on Friday night, swimming faster than when she won Olympic gold in the event last year.

Titmus clocked one minute 53.31 seconds in Adelaide, some 0.19 seconds quicker than when she won the event at the Tokyo Games. The dual Olympic champion was eyeing the world record of 1:52.98 set by Italy’s Federica Pellegrini in 2009 during the super-suit era, the longest-standing benchmark in women’s swimming.

• Simpson impresses with PB at national championships
• Shayna Jack gets national team recall after doping ban

Singer-turned-swimmer Cody Simpson qualified for this year’s Commonwealth Games after finishing third in the 100 metres butterfly final at the national championships in Adelaide, while Shayna Jack secured selection on her comeback from a doping ban.

Simpson, 25, turned heads earlier on Wednesday when he upstaged Olympic freestyle gold medallist Kyle Chalmers and won his heat in a personal best time of 51.79 seconds behind defending champion Matt Temple (51.64).