India, Aug. 29 -- On the scoresheet, it may look like a standard straight-set victory, but world number three Coco Gauff's 7-6 6-2 victory over Donna Vekic in the second round of the US Open was anything but. At points through the first set, the 2023 champion looked lost at sea, and broke down in tears at the changeover after she lost her serve at 4-4.

It was a challenging and emotional night for the American star, whose persistent double-fault problem reared its head again as she sent down 7 double faults in the first set, many of them not particularly close.

Gauff has been attempting to recalibrate and redesign her serve on the go in the US Open, having signed on a biomechanical specialist to her coaching team in an attempt to do so. ...