The US Open singles draw runs from August 24 to September 7. Stay locked into Sports Illustrated's Serve On SI for all of your tennis news from the court and beyond. Interview: Aryna Sabalenka is using wearable technology to transform her game. Interview: Madison Keys talks Nasal Strips in tennis, 2025 WTA season, and US Open.

Coco Gauff turns to a biomechanics expert, who helped rival Aryna Sabalenka overcome her serving troubles, on the eve of the US Open.

Prior to the kickoff of the New York-based 2025 U.S. Open, American women’s tennis superstar Coco Gauff is making a massive change. According to a report from Bounces, Gauff has fired one of her coaches, Matt Daly, and has decided to bring in biomechanics expert Gavin MacMillan.

American tennis pro Coco Gauff was joined by celebrated U.S. Women’s National Team soccer star, Alex Morgan, in a doubles match at the Stars of the Open exhibition at Arthur Ashe Stadium.

Recent U.S. Open champions Aryna Sabalenka, Iga Swiatek and Coco Gauff lead the women's field when singles play begins Sunday at Flushing Meadows.

Gauff hired Daly, a grip specialist, to work on her serve and forehand after she fired then-coach Brad Gilbert following a disappointing fourth-round exit at the 2024 US Open on the heels of her victory at the tournament in 2023. Daly worked with Gauff as she won the French Open this summer, claiming her second career Grand Slam tournament victory.

Coco Gauff's 2025 season has been a rocky ride, but she's choosing to have a short memory as she prepares for the US Open.

Coco Gauff's mother has sent an uplifting message to her daughter ahead of the US Open 2025, in light of an ignominious statistic concerning the two-time Grand Slam champion's second serve, which has