Gauff Changes Coaches, Seeks Serve Fix Before US Open

Coco Gauff, the 21-year-old American tennis player and 2023 U.S. Open champion, has made a significant coaching change ahead of the 2025 U.S. Open to address persistent issues with her serve, which has resulted in a tour-high 320 double faults this season. She parted ways with her previous coach Matthew Daly and brought in Gavin MacMillan, a biomechanics specialist known for improving Aryna Sabalenka's serve, alongside longtime mentor Jean-Christophe Faurel. Despite recent inconsistent performances and a drop from world No. 2 to No. 3, Gauff remains confident in her ability to rebound, citing her 2025 French Open win as a testament to her successful season. She acknowledges the ups and downs of the tennis season and is focused on making technical improvements without wasting time on ineffective methods. The coaching change aims to help her regain the form that earned her multiple Grand Slam titles and maintain her trajectory toward becoming a future world No. 1. Gauff’s bold move reflects her commitment to evolving her game and competing at the highest level in the sport.