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.


Netherlands win Group F, Japan and Sweden also through
Beccacece hails Ecuador's biggest World Cup victory
New Zealand openers break record against England
MENA Golf Tour confirms exemption categories for 2026/27 season
Mexico bounce Czechs out of World Cup with win
