Open Extended ReactionsWIMBLEDON, England -- Coco Gauff suffered a shock defeat in the first round at Wimbledon on Tuesday, her earliest exit at a Grand Slam since losing in her first match at Wimbledon two years ago. In total, Gauff hit nine double faults and won only 44% of points on her second serve. Landing just 45% of her first serves left her vulnerable, and Yastremska took full advantage. Gauff seemed mentally tiredWinning the French Open last month clearly took a lot out of Gauff. I saw the draw and knew it would be a tough match for me.