Australian Open semifinalist and German star Alexander Zverev suspects he contracted coronavirus in December.
COVID-19 has wreaked havoc across the world, with more than 69,300 deaths globally and sport brought to a standstill.
All ATP and WTA tournaments have been called off until mid-July, with Wimbledon cancelled, due to the coronavirus pandemic.
Zverev produced his best grand slam performance at the Australian Open, where he reached the semifinals in January, and the 22-year-old believes he may have been infected prior to the year's opening major in Melbourne.
"My friend Brenda and I were in China on December 28," the world number seven told Bild .
"You can't imagine how I coughed for a month in Australia. I had a fever for two or three days and I coughed for five or six hours. Brenda too. We didn't know what it was. It was a cough that I never had. I had no pain, but I coughed continuously every 10 seconds.
"I had no pain, but I coughed continuously every ten seconds."
- Premier League: Arsenal beats Wolves to go four points clear at top
- Vaishali, India’s third female Grandmaster, is making all the right moves
- IPL 2024 Auction: Scouts reveal domestic middle-order batters, fast bowlers likely to be hot property on December 19
- EURO 2024 full schedule: Complete list of matches, groups, kick-off time, venues, live streaming info
- UEFA to revamp Women’s Champions League, create second-tier European competition