Nishikori, Keys Get Work Done Early on Labor Day
Madison Keys powered her way into the U.S. Open quarterfinals on Monday, improving to 5-0 all-time against Slovakia’s Dominika Cibulkova with a 6-1, 6-3 drubbing in Arthur Ashe Stadium. Keys is now into her third Grand Slam quarterfinal of 2018 and two victories away from returning to the U.S. Open final. “I am glad…

