The Australian Open quarter-finals continue on Wednesday and top seed Jannik Sinner's task of defending his crown is not getting any easier. The Italian is recovering from an illness and will face Australia's last hope Alex De Minaur,

The two best men's players in the world are reconfiguring the sport before their opponents' eyes. They don't know what to do about it

Defending champion Jannik Sinner has defeated 46th-ranked Marcos Giron of the U.S. 6-3, 6-4, 6-2 at the Australian Open.

By Nick Mulvenney MELBOURNE (Reuters) -Defending champion Jannik Sinner overcame debilitating illness as well as Dane Holger Rune to reach the quarter-finals of the Australian Open for the third time with a 6-3 3-6 6-3 6-2 victory on Monday.

Novak Djokovic's former strategist Craig O'Shannessy believes Alex de Minaur has his best chance yet to topple defending Australian Open champion Jannik Sinner.

Alex De Minaur kept the home flag flying at the Australian Open as he beat rising American Alex Michelsen 6-0 7-6(5) 6-3 to reach the quarter-finals for the first time on Monday. The 25-year-old has now reached the last eight at every Grand Slam and will face top seed and defending champion Jannik Sinner for a place in the semis.

Home favourite Alex De Minaur will face Jannik Sinner in the quarterfinals of the Australian Open after the world number eight beat world number 42 Alex Michelsen of the US 6-0 7-6 6-3 in the round of 16 Monday.