Bulgarian Grigor Dimitrov, 29, has spent the last few days playing demonstration matches on gravel in Serbia - Adria Summer Tour as world set Novak Djokovic's little brother Djordje Djokovic started in the Balkans.

Last weekend, the 19-ranked Dimitrov lost to Dominic Thiem by 2-0 in sets and as late as Saturday there was a new cod against Marin Čilić, ranked 37th in the world, with the same numbers.

Just a day later, Dimitrov says that he tested positive for Covid-19.

“I just want to tell my fans and friends that I tested positive for Covid-19 at home in Monaco. I just want to make sure that everyone I have been in contact with over the last few days is testing and taking the necessary security measures. I am so sorry for any damage I may have caused. I'm home now and I'm recovering, ”he writes on Instagram.

It will take a few more months before the tournaments on the regular ATP tour start.