Defending champion Jannik Sinner battled dizzy spells today in energy-sapping heat to reach the Australian Open quarter-finals, admitting a long interruption when he accidentally broke the net was “big, big luck”.
The world number one again dropped a set before coming home 6-3, 3-6, 6-3, 6-2 against Danish 13th seed Holger Rune on Rod Laver Arena with both men needing medical attention.
Sinner struggled in the muggy conditions, his hand visibly shaking and his heart rate taken in the third set before he left court for a medical timeout.
Rune needed attention to a sore right knee in the same set.
