Japan's Kei Nishikori has tested positive for COVID-19 while in Florida - just two weeks ahead of the US Open.
The 30-year-old former world number four has been staying at the IMG Academy in Bradenton, Florida.
The tennis star has pulled out of the upcoming Western & Southern Open, a warm-up tournament for many before the Grand Slam.
Taking to his app, he said he is "feeling well and has very little symptoms, but will obviously be in complete isolation for the safety of everyone".
Nishikori added that he will get tested again on Friday, before a decision on US Open status is taken.


Bangladesh humble Australia on day one of Darwin Test
Swiatek reaches her first final of season at Canadian Open
PSG retain UEFA Super Cup with win over Aston Villa
Americans Shelton, Nakashima to meet in Canadian Open final
Dalic named UAE coach after leaving Croatia
