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.

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

Gauff is currently the WTA World No. 3 with a record of 35-12 with one singles title (Roland Garros). She won the 2023 US Open, but failed to defend her title last year. Less than a month later, she fired coach Brad Gilbert.