Japanese tennis star Kei Nishikori, withdrew from the US Open
Japanese tennis star Kei Nishikori is still determined not to participate in this year’s US Open. It is even negative in COVID-19. According to the 2014 U.S. Open runner-up, he is very happy now because after two positive results of his test came out for the third time of this negative COVID-19 test. The 30-year-old…