The Swiss became the third-oldest player to win a Masters 1000 match on Thursday in Shanghai.
"I still have [pneumonia], it's not disappeared in a week," Alexander Zverev said ahead of Rolex Shanghai Masters.
The Spaniard says that he and Sinner have a great relationship off court, but it's not BFF status.
The tennis-table tennis connection was strong at the China Open.
The former World No.1 is thrilled to be back on court.
"I feel like it's always great when we meet," Jannik Sinner said after bowing to Carlos Alcaraz in the Beijing final.
The Serbian legend spoke his mind about Jannik Sinner's ongoing doping case.
