Japan's Kei Nishikori said Wednesday he will skip the U.S. Open despite testing negative for the novel coronavirus, citing a lack of practice for the tournament slated to begin next week."I am happy to announce that I tested negative for COVID. I will slowly pick up my practice schedule tomorrow," Nishikori said on his official app."Having said that, I (together with my team) have decided to skip the U.S. Open this year. After such a long break, I feel that returning in a best-of-5 long-match setting is not smart until I am fully ready to do so."Nishikori revealed he tested positive for the…READ FULL ARTICLE