Tennis: Wimbledon teen phenom Gauff books US Open date with defending champion Osaka

August 30, 2019 10:03 AMNEW YORK (AFP/REUTERS) - American 15-year-old Coco Gauff advanced to a third-round US Open showdown with top-seeded defending champion Naomi Osaka on Thursday (Aug 30) by defeating Hungarian qualifier Timea Babos 6-2, 4-6, 6-4.