“Because Coco fights and can fly, she never says good bye. Her serve will become her best shot and she contend again for the number one spot. If she is reprogramed with the more compact explosive ATP FOREHAND, the Delray Dart will be number one in the land. @CocoGauff.” That’s how Rick Macci, Serena Williams’s former coach, put it as he pointed to the flaw that cost Coco Gauff in her US Open round of 16 loss to Naomi Osaka, one that had also shown up earlier in August at the Canadian Open, when she piled up 23 double faults against Danielle Collins. Macci believes that same weakness, if corrected, could ultimately turn into her greatest strength.

But Coco Gauff seems to be working through her adjustments slowly, even with addition of serve doctor, Gavin McMillan. Against Ajla Tomljan

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