Legendary tennis coach Rick Macci is of the opinion that tennis superstar Coco Gauff could see her Grand Slam tally increase to double digits in the future, provided the American makes one tactical change to her game play.

At only 21 years of age, Gauff has already won two Grand Slam titles. The Atlanta native won her maiden major title at the 2023 US Open, before clinching her second Grand Slam title at this year's Roland Garros tournament.

The sky seems to be the limit for Gauff, who has seen her ranking climb to a career-high of World No.2. However, Macci believes Gauff could attain the No.1 ranking, in addition to winning several more Grand Slam titles, if she makes some changes to her serve.

Gauff's shaky serve has been a hot topic as of late, as the WTA star hit the most double fa

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