The 15-year-old lost the first set 6-3 to Russian Anastasia Potapova in her first match in the year's final Grand Slam.
US Open: Coco Gauff drops first set in New York debut, but forces decisive third
The 15-year-old lost the first set 6-3 to Russian Anastasia Potapova in her first match in the year's final Grand Slam.
