Speculation about Jannik Sinner’s health has intensified ahead of his Australian Open quarterfinal clash with Alex de Minaur. Reports suggest the world No. 1 may be battling pneumonia, following concerning scenes during his win over Holger Rune.

During Monday’s match, Sinner appeared to shake uncontrollably on his right side and required medical treatment after delaying his arrival and leaving the court mid-match. He admitted to feeling physically unwell, experiencing dizziness, and struggling with movement, particularly to his left.

“I was not feeling really well. I think we saw that today,” Sinner acknowledged post-match. Despite these challenges, he managed to secure victory after a prolonged 21-minute delay to repair a broken net hook.

Sinner faces a formidable test in de Minaur as he battles both his opponent and his own physical struggles.

Sinner at the Australian Open, ranking, and results in 2025

At the moment ranked no.1, Jannik has achieved a compiled 4-0 record in 2025. Sinner is now having a run at the Australian Open where he bested the world no.36 Nicolas Jarry 7-6(2) 7-6(5) 6-1

, the world no.173 Tristan Schoolkate 4-6 6-4 6-1 6-3, the world no.46 Marcos Giron 6-3 6-4 6-2 and the world no.13 Holger Rune 6-3 3-6 6-3 6-2.

Jannik Sinner will take on the world no.8 Alex De Minaur in the quarter on Wednesday at 7:30 pm on Rod Laver Arena. Their actual head to head record is 9-0 for Sinner.

Jannik won 19 titles in his career: 9 on hard courts, 1 on clay courts, 8 on indoor courts and 1 on grass courts. (See the list of his titles)

He is also scheduled to play in Rotterdam (ABN AMRO Open) on the 3rd of February and Doha (Qatar ExxonMobil Open) on the 17th of February.

Jannik Sinner

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