A constant struggle with oneself. That's how the shifts in service for Cori Gauff are. She has decided to take the necessary risk to improve her serve by modifying the mechanics, with all that implies. She suffered a lot in the first round of the US Open 2025 with this stroke and explained the process she is going through in a press conference.
To be one of the best in the world, you cannot have technical gaps and Cori Gauff is willing to step out of her comfort zone and invest all the time and effort necessary to improve her serve. It has never been a strong point for the young American, but she believes the time has come to take on responsibilities. Therefore, she has hired biomechanics specialist Gavin MacMillan, who worked years ago with Sabalenka, and is ready to completely change Gauff's service parameters, as she committed 10 double faults and won only 44% of points played on the second serve.

- Gauff feels stressed for making this mechanical change right before a Grand Slam
"I spent so much time on the court serving last week that my shoulder ended up hurting. I have changed the service mechanics, and it is not easy to revert to old habits under pressure situations. I know I must stick to the new motion no matter what because, in the long run, it will be beneficial, but it's not easy because changing a stroke at this point is like learning a new language. I feel that what I'm doing now makes sense, even though I continue to make mistakes and not serve too fast; I just need more time. There is no mental issue with the serve; it's all biomechanical, which is why this change will help me in the medium term," the American concludes.
It is clear that Gavin's hiring could change Coco's career, just as he did with Sabalenka, who had many issues with her second serve that were resolved by this biomechanics guru. "I have complete trust in him because science and facts support his theories. We've only been together for a week, and I feel very stressed because making such a change in a Grand Slam is not the best; I would have preferred it to be in a WTA 500. I have to trust the work we are doing, and I know that during the Asian tour, I will have much more time to fine-tune the new mechanics," warned Cori Gauff, whose next opponent in the US Open 2025 will be Donna Vekic.
This news is an automatic translation. You can read the original news, Gauff explica los problemas con su saque: "Es un tema biomecánico que me estresa mucho"

