NEW YORK :Top-ranked Jannik Sinner recovered from a set down against Canadian Denis Shapovalov 5-7 6-4 6-3 6-3 in the third round of the U.S. Open on Saturday, while Coco Gauff shook off the nerves that had rattled her during her first two matches to advance. Defending champion and world number one Sinner dropped his first set of the tournament on Arthur Ashe Stadium as Shapovalov unleashed some of his best tennis to get the hot start. The Italian quickly flipped the momentum, however, as he