Japanese ace Kei Nishikori defeated Philipp Kohlschreiber of Germany in straight sets on Monday to reach the quarterfinals of the U.S. Open, the final major of the season.On a good day all round for Japan, Naomi Osaka reached the last eight of the women's draw after outlasting Aryna Sabalenka of Belarus in three sets at Louis Armstrong Stadium.It is only the second time that Japan will have players in the quarterfinals of the men's and women's singles competitions. Shuzo Matsuoka and Kimiko Date both reached the last eight of the men's and women's draws, respectively, in 1995.Nishikori, the…READ FULL ARTICLE
