The World No. 1, despite feeling unwell in sweltering conditions, kept up his title defense with a four-set triumph.

Jannik Sinner is through to the Australian Open quarterfinals after a drama-filled fourth-round win over Holger Rune. World No. 1 Sinner won in four sets, 6-3. 3-6, 6-3, 6-2, but this did not tell the story of a contest defined by illness.

Jannik Sinner moved into the Australian Open quarterfinals Monday by eliminating Holger Rune in a match paused by medical timeouts and the net detaching from the court.

The screw holding the net in place at the Australian Open’s main stadium has been jarred loose during defending champion Jannik Sinner’s fourth-round match against Holger Rune

Top seed Jannik Sinner defeated Holger Rune in an intense fourth-round match at the Australian Open, overcoming physical struggles and a medical timeout to win 6-3, 3-6, 6-3, 6-2. Sinner's impressive recovery and determination,