Matthew Daly is out and Gavin MacMillan is in to correct Coco's spate of double faults that has put her in a deep tailspin since winning the French Open.

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.

Gauff has not appeared confident with her serve since beating Aryna Sabalenka on clay earlier this summer. She won three matches in the US Open tuneup earlier at the Cincinnati Open, but lost to Italy's Jasmine Paolini in the fourth round. Last week in Cincinnati, Gauff said she's practicing patience on tour the rest of the season.

Tennis superstar Coco Gauff has parted ways with her coach just days before this year’s US Open, according to reports, including ESPN, on Wednesday.

Gauff's serve struggles have reemerged of late after a period of improvement with coach Matt Daly, who is now off her team.

There was a time when being on a Wheaties box was the pinnacle of athletic fame. But today, the new status symbol is a smoothie collaboration, and tennis star Coco Gauff is the latest to add her name to a signature beverage. Gauff’s Protein Pineapple Orange Smoothie launches from Naked Smoothies this week—and, of course, her face is on the bottle.

A look at some of the women to watch at the U.S. Open, which starts Sunday, with money-line odds via BetMGM Sportsbook: Aryna Sabalenka Ranked: 1 Career-Best Ranking: 1 Country: Belarus Age: 27 2025 Record: 50-10 2025 Titles: 3 Career Titles: 20 Grand Slam Titles: 3 — U.

Defending champion Jannik Sinner, who has been recovering from illness, received a more favourable route to the U.S. Open final than Carlos Alcaraz while Aryna Sabalenka will be tested in her bid to retain her title after the draw was made on Thursday.