NEW YORK – Kei Nishikori, the 2014 U.S. Open runner-up, said Friday he tested positive for COVID-19 a second time.Nishikori wrote on his mobile app that he will take another test next week, “at which time we will update you with more information.”“I have very minimal symptoms and am staying in full isolation,” Nishikori wrote Friday.
He originally tested positive for the illness caused by the coronavirus last Sunday and announced that day he was pulling out of the Western & Southern Open, the hard-court tournament that will precede the U.S.
Open in New York.The Western & Southern Open starts Saturday; the U.S. Open will begin Aug. 31.He cannot play in the Grand Slam tournament if he has COVID-19.