Gauff stunned by qualifier Wang at Berlin Open

French Open champ makes seven double faults

Wang to face Badosa after career-best grass win

Newly crowned French Open champion Coco Gauff was stunned on her return to action Thursday, losing to Chinese qualifier Wang Xinyu 6-3, 6-3 at the Berlin Open.

The second-ranked Gauff, who won at Roland-Garros less than two weeks ago for her second Grand Slam title, amassed 25 unforced errors and seven double faults in her loss to Wang.