Japan's Naomi Osaka survives scare to enter Last 16

Two-time Grand Slam winner Naomi Osaka battled into the last 16 of the US Open on Friday, requiring three sets to defeat 18-year-old Ukrainian Marta Kostyuk. Osaka, the 2018 US Open champion, needed 2hr 33min to beat the unseeded world number 137 6-3, 6-7 (4/7), 6-2 inside an empty Arthur Ashe Stadium. "She was very good. I'm...