Defending champion Jannik Sinner takes on Alex de Minaur in the last quarterfinal of the men's singles event on Wednesday ...

World tennis No.1 Jannik Sinner is reportedly seriously ill with pneumonia, ahead of his crucial clash against Alex de Minaur.

At least a half-dozen people went over to take a look at things and attempt to re-connect the net after it was dislodged by a powerful serve from the Italian.