PARIS—Coco Gauff kept double-faulting. She kept missing plenty of other strokes. She kept losing games in bunches. And all the while, she would let out a sigh or bow her head or look generally uncomfortable.
What the 21-year-old Gauff never did Wednesday during a tense and topsy-turvy French Open quarterfinal against another American woman with a Grand Slam title, Madison Keys, was give up hope or go away. And, in a contest filled with plenty of mistakes, it was Gauff who emerged to grab eight of the last nine games for a 6–7 (6), 6–4, 6–1 victory over Keys and a third trip to the semifinals at Roland-Garros.
