Coco Vandeweghe Pictures
STUTTGART, GERMANY - APRIL 26: (EDITORS NOTE: Image has been converted to black and white.) CoCo Vandeweghe of the United States plays a forehand to Laura Siegemund of Germany during day 4 of the Porsche Tennis Grand Prix at Porsche-Arena on April 26, 2018 in Stuttgart, Germany. (Photo by Alex Grimm/Getty Images)