Going into this year’s US Open, one of the main talking points was Coco Gauff’s serve. The honest truth is that the No. 3 seed was really struggling with double faults. In the first round of the Montreal Open against Danielle Collins, Gauff managed to win, yet had raked up 23 double faults. This eventually led to her downfall with early-round exits in Montreal and Cincinnati. Despite the skepticism surrounding her form, Gauff entered the US Open with renewed hope and vigor barely days after seeking help from biomechanics coach, Gavin MacMillan.

Things were looking up for Gauff as she clawed her way out of the challenge against the formidable Ajla Tomljanović, despite having committed 10 double faults. The learning curve seemed to be upward and onward, until now, that is. Her R2 game again

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