American tennis star Coco Gauff has made a bold pre–US Open move by hiring renowned serving coach Gavin MacMillan, who previously worked with Aryna Sabalenka. The partnership signals Gauff’s commitment to refining her serve, a weapon that has shown flashes of brilliance but has also lacked consistency at crucial moments.
MacMillan is widely respected in tennis circles for transforming Sabalenka’s serve from erratic to one of the most powerful and reliable on tour. His biomechanics-driven approach focuses on efficiency, rhythm, and mental reinforcement—qualities that could elevate Gauff’s already explosive game.
According to insiders, Gauff’s decision stems from her desire to minimize double faults and turn her first serve into a more consistent match-winning tool. While Gauff’s baseline game has matured, she reportedly sees her serve as the missing link in challenging for multiple Grand Slam titles.
The timing of the hire is significant. With just weeks before the US Open, Gauff appears to be making an aggressive push to optimize her performance on home soil. The hard courts of New York traditionally reward players with a commanding serve—making this collaboration potentially decisive.
Still just 21, Gauff has steadily climbed the WTA rankings, capturing her first Grand Slam title at the French Open last year. Yet, her serve has drawn mixed reviews from analysts who believe it could either propel her to dominance or limit her against top-tier rivals.
If MacMillan can replicate his success with Sabalenka, Gauff could transform her serve into a genuine asset. A more reliable delivery would not only earn her free points but also reduce pressure during tense matches, allowing her athleticism and shot-making to shine.
As the US Open approaches, tennis fans will closely watch how quickly Gauff integrates MacMillan’s techniques into her game. Whether the adjustment produces immediate results or serves as a long-term investment, this coaching move underscores her determination to rise as the face of American tennis.
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