The third-round men's singles match between Greece's Stefanos Tsitsipas and Italy's Jannik Sinner took four hours to settle on Rod Laver Arena ©Getty Images

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Third seed Tsitsipas is the highest-ranked player remaining in the men's singles draw, and staved off a Sinner fightback to win 6-4, 6-4, 3-6, 4-6, 6-3 ©Getty Images
Third seed Tsitsipas is the highest-ranked player remaining in the men's singles draw, and staved off a Sinner fightback to win 6-4, 6-4, 3-6, 4-6, 6-3 ©Getty Images
Félix Auger-Aliassime of Canada, seeded sixth, led against Czech youngster Jiří Lehečka but fell to a 4-6, 6-3, 7-6, 7-6 defeat ©Getty Images
Félix Auger-Aliassime of Canada, seeded sixth, led against Czech youngster Jiří Lehečka but fell to a 4-6, 6-3, 7-6, 7-6 defeat ©Getty Images
Poland's tenth seed Hubert Hurkacz was also beaten despite leading in the fourth-round, losing to the United States' Sebastian Korda in a fifth-set tiebreak ©Getty Images
Poland's tenth seed Hubert Hurkacz was also beaten despite leading in the fourth-round, losing to the United States' Sebastian Korda in a fifth-set tiebreak ©Getty Images
Olympic silver medallist Karen Khachanov, a Russian player competing as a neutral, is into the quarter-finals with a straight-sets win against Japan's Yoshihito Nishioka ©Getty Images
Olympic silver medallist Karen Khachanov, a Russian player competing as a neutral, is into the quarter-finals with a straight-sets win against Japan's Yoshihito Nishioka ©Getty Images
Poland's world number one and women's singles tournament favourite Iga Świątek, right, was knocked out by Kazakhstan's Wimbledon champion Elena Rybakina, left ©Getty Images
Poland's world number one and women's singles tournament favourite Iga Świątek, right, was knocked out by Kazakhstan's Wimbledon champion Elena Rybakina, left ©Getty Images
The US' Coco Gauff also suffered a surprise exit in the fourth-round, losing to Latvia's Jeļena Ostapenko ©Getty Images
The US' Coco Gauff also suffered a surprise exit in the fourth-round, losing to Latvia's Jeļena Ostapenko ©Getty Images
Seventeenth seed Ostapenko is enjoying her best run to date at the Australian Open, and is set to face Rybakina in the quarter-finals ©Getty Images
Seventeenth seed Ostapenko is enjoying her best run to date at the Australian Open, and is set to face Rybakina in the quarter-finals ©Getty Images
American Jessica Pegula, seeded third, is the highest-ranked player left in the women's singles draw after beating Czech Republic's Barbora Krejčíková 7-5, 6-2 ©Getty Images
American Jessica Pegula, seeded third, is the highest-ranked player left in the women's singles draw after beating Czech Republic's Barbora Krejčíková 7-5, 6-2 ©Getty Images
Belarusian two-time winner Victoria Azarenka, playing as a neutral, is enjoying her best Australian Open run since 2016 after coming from a set down to beat China's Zhu Lin in a match that finished at 2.15am local time ©Getty Images
Belarusian two-time winner Victoria Azarenka, playing as a neutral, is enjoying her best Australian Open run since 2016 after coming from a set down to beat China's Zhu Lin in a match that finished at 2.15am local time ©Getty Images