Despite an increasingly public profile, tennis superstar Coco Gauff continues to hold serve when it comes to keeping the identity of her boyfriend a mystery. Gauff, the defending U.S. Open champion who won her first Grand Slam doubles’ title in June,

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.

Coco Gauff exclusively told E! News how she's gearing up for her return to NYC for the US Open, two years after winning it, and why her Naked Protein Pineapple Orange Smoothie is the perfect treat.

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.

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.

Coco Gauff knows that a healthy lifestyle is all about balance. The 21-year-old tennis star revealed her go-to cheat day meal when she’s off the court while chatting exclusively with Parade amid the launch of her signature smoothie with Naked Smoothies, which she celebrated at her Coco’s Corner pop-up event in New York City on Wednesday, Aug. 20.

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.