NEW YORK—Grand Slam rallies are a give-and-take of pace and spin. Facing a former world No. 1 enjoying a dream run, Coco Gauff knows champions don’t give major matches away. So she took it to Caroline Wozniacki when it mattered most. Elevating her attack, Gauff soared through six straight games stopping Wozniacki 6-3, 3-6, 6-1 to become the first […]