In the opening set of her third round match against Elise Mertens on Friday, Coco Gauff looked frustrated, frustrated and looking like she was going to finish early, unlike her earlier this week at the US Open. Mertens, a 27-year-old Belgian, played slowly and aggressively, while Gauff, the 19-year-old American superstar, made mistake after mistake… Continue reading Coco Gauff Wobbles, Then Steals the Show at the US Open