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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.

Coco Gauff's decision to part ways with coach Matt Daly and replace him with a renowned biomechanics expert ahead of the 2025 US Open was recently assessed by prominent tennis insider Gill Gross.

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.

While Gauff didn't hire Macci, she made a shakeup just before the US Open after it was revealed on Tuesday that she split with coach Matt Daly and hired biomechanics coach Gavin MacMillan - the same coach who fixed Aryna Sabalenka's serving woes in 2022.

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.

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

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.