Former Australian Open winner Stan Wawrinka has admitted he tested positive for COVID-19 late last year.
The 35-year-old said he self-isolated at home in Switzerland and added his preparations for the Melbourne Slam had been affected by the setback.
“I’m trying to get in shape. I was positive over Christmas so I had to stay more than 10 days at home, so I completely lost all the work I did off-season,” Wawrinka, who won the Australian Open 2014, said.
“I was feeling really bad during the first five days but the symptoms, you keep it, and are more tired every day and that lasts a few weeks.
“It was not a good experience. Now I finally start to feel better but it can touch you badly and it’s important to be really careful.”
Wawrinka will be top seed at the ATP Murray River Open tournament in Melbourne next week.
