Yoshihito Nishioka's career-best tennis Grand Slam run ended Sunday, the Japanese left-hander losing to Russian Karen Khachanov in the Australian Open fourth round.The 18th-seeded Khachanov won 6-0, 6-0, 7-6(4), firing 15 aces and converting seven of 10 break points against the 31st-seeded Nishioka at Melbourne Park.It took Nishioka 15 games to win his first as he broke back after trailing 2-0 during the third set."He played amazingly well," Nishioka said. "He almost made no errors while I made errors early on. I absolutely had no chance in the first two sets."But the 27-year-old added that…READ FULL ARTICLE
