Ahead of the US Open, Coco Gauff made a bold decision to shake things up and it definitely turned heads. She brought in biomechanics expert Gavin MacMillan—yes, the same coach who worked wonders with Aryna Sabalenka—specifically to sharpen up her serve after battling ongoing issues with the same – nightmarish double fault counts, including a staggering 23 in one match against Danielle Collins at the 2025 National Bank Open. Across this season alone, she racked up 347 double faults! It was a problem she just couldn’t shake. But now? It looks like the tide finally might be turning.

Thursday in Beijing told a different story, as Gauff fended off Germany’s Eva Lys in a fiery quarterfinal clash. The 6-3, 6-4 scoreline looked neat on paper, but the intensity was much higher on court. Gauff, a

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