The Belarusian world number two Aryna Sabalenka's wait for a maiden women's singles Grand Slam goes on after she lost to Estonia's Kaia Kanepi in Melbourne ©Getty Images

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Estonia's Kaia Kanepi came from a set down to beat Belarus' Aryna Sabalenka, winning the decisive tiebreak on the Margaret Court Arena ©Getty Images
Estonia's Kaia Kanepi came from a set down to beat Belarus' Aryna Sabalenka, winning the decisive tiebreak on the Margaret Court Arena ©Getty Images
Alizé Cornet of France, top, reached her first Grand Slam quarter-final by beating former French Open and Wimbledon champion Simona Halep of Romania, bottom ©Getty Images
Alizé Cornet of France, top, reached her first Grand Slam quarter-final by beating former French Open and Wimbledon champion Simona Halep of Romania, bottom ©Getty Images
Poland's seventh seed Iga Świątek required three sets to reach the quarter-finals at the expense of Romania's Sorana Cîrstea ©Getty Images
Poland's seventh seed Iga Świątek required three sets to reach the quarter-finals at the expense of Romania's Sorana Cîrstea ©Getty Images
In another three-set women's singles clash, Danielle Collins of the United States saw off Belgium's Elise Mertens ©Getty Images
In another three-set women's singles clash, Danielle Collins of the United States saw off Belgium's Elise Mertens ©Getty Images
US Open champion Daniil Medvedev of Russia, left, continued his bid for a second consecutive Grand Slam title by defeating American Maxime Cressy ©Getty Images
US Open champion Daniil Medvedev of Russia, left, continued his bid for a second consecutive Grand Slam title by defeating American Maxime Cressy ©Getty Images
Félix Auger-Aliassime of Canada will play Russia's Daniil Medvedev in the last eight in a repeat of their US Open semi-final after the world number nine came from behind to beat Croatian Marin Čilić ©Getty Images
Félix Auger-Aliassime of Canada will play Russia's Daniil Medvedev in the last eight in a repeat of their US Open semi-final after the world number nine came from behind to beat Croatian Marin Čilić ©Getty Images
The host nation's hopes of success in the men's singles at the Australian Open were ended as Alex de Minaur, right, was beaten in straight sets by Italy's Jannik Sinner, left ©Getty Images
The host nation's hopes of success in the men's singles at the Australian Open were ended as Alex de Minaur, right, was beaten in straight sets by Italy's Jannik Sinner, left ©Getty Images
Greece's Stefanos Tsitsipas continued his bid for a first Grand Slam victory by beating American Taylor Fritz in a thrilling five-set tie ©Getty Images
Greece's Stefanos Tsitsipas continued his bid for a first Grand Slam victory by beating American Taylor Fritz in a thrilling five-set tie ©Getty Images
The match between Greece's Stefanos Tsitsipas and the United States' Taylor Fritz on Rod Laver Arena took three hours and 23 minutes to complete ©Getty Images
The match between Greece's Stefanos Tsitsipas and the United States' Taylor Fritz on Rod Laver Arena took three hours and 23 minutes to complete ©Getty Images
Home favourites Dylan Alcott and Heath Davidson had won the last four quad doubles tournaments at the Australian Open, but suffered a semi-final defeat to The Netherlands' Paralympic champions Sam Schröder and Niels Vink ©Getty Images
Home favourites Dylan Alcott and Heath Davidson had won the last four quad doubles tournaments at the Australian Open, but suffered a semi-final defeat to The Netherlands' Paralympic champions Sam Schröder and Niels Vink ©Getty Images