Rafael Nadal tests positive for COVID: "I am experiencing some unpleasant moments"

Rafael Nadal said Monday that he has tested positive for COVID-19 after returning from a tennis exhibition tournament in Abu Dhabi last week, leaving his participation in the Australian Open next month up in the air. 

The 20-time Grand Slam champion said on Twitter that he took a PCR test upon returning to Spain and got a positive result. Nadal said he tested negative when he was in Kuwait and Abu Dhabi and last tested negative on Friday.

"I am experiencing some unpleasant moments but I hope that I will improve little by little. I am now confined at home and have informed those people who have been in contact with me of the result," he wrote in Spanish.