He refuses to say exactly what is wrong with him, only that he is “not there health-wise” and has been “a bit dizzy at times”. Read more at straitstimes.com.

WORLD number one Jannik Sinner was seen trembling in worrying scenes during the Australian Open. The incident occurred during his fourth round win over Holger Rune at the Rod Laver Arena today.

MELBOURNE - Jannik Sinner battled through illness to reach the quarter-finals of the Australian Open on Monday as his Italian compatriot Lorenzo Sonego ended teenager Learner Tien's fairytale run. Read more at straitstimes.

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

Defending champion Jannik Sinner has moved into the quarterfinals at the Australian Open after beating Holger Rune during a match slowed down by medical timeouts for each player and a delay because the net got knocked loose.

Defending champion Jannik Sinner battled dizzy spells on Monday in energy-sapping heat to reach the Australian Open quarter-finals, admitting a long interruption when he accidentally broke the net was "big,

World no. 1 Jannik Sinner has survived a mid-match health scare to keep his title defence alive at Melbourne Park. Jannik Sinner looked sick and sorry, with his Australian Open title defence under siege.

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

Jannik Sinner will part ways with veteran coach Darren Cahill after this season, the world's top-ranked tennis player revealed Thursday in Melbourne, where Sinner advanced to the third round of the Australian Open.

Defending champion Jannik Sinner’s consecutive-sets streak has ended in the second round of the Australian Open.

Defending champion Jannik Sinner lost his first set since October but recovered to beat Tristan Schoolkate and reach the third round of the Australian Open.