014 Us Open News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Kei Nishikori pulled out of the DC Open on Tuesday because of an injured left knee shortly before he was scheduled to play what was supposed to be his first match at the second ATP tournament of a comeback from hip surgery. Nishikori, a 33-year-old from Japan who was the 2014 U.S. Open runner-up, returned to top-level tennis last week in Atlanta. Nishikori made it as high as No. 4 in early 2015, about six months after his semifinal victory over Novak Djokovic at the U.S. Open made him the first male Grand Slam singles finalist from Asia.

Frances Tiafoe ended Rafael Nadal’s 22-match winning streak at Grand Slam tournaments by beating the 22-time major champion in the U.S. Open’s fourth round on Monday.