Overview

• The world No. 3 split with Matt Daly days before play in New York and was seen working on her serve with MacMillan at Flushing Meadows while retaining longtime mentor J.C. Faurel.
• She pointed to a tour‑leading 320 double faults this season and said she would not “waste time,” stressing a technical overhaul with an eye on the long term.
• Sabalenka, who previously hired MacMillan to address her own serving crisis, said his methods made a difference within about two weeks and offered support for Gauff’s move.
• Reaction has ranged from ESPN’s Patrick McEnroe calling the decision “gutsy” to coach Rick Macci arguing the timing is a necessary correction rather than a gamble.
• Gauff begins her US Open campaign Tuesday against Ajla Tomljanovic, with the draw positioning a possible fourth‑round meeting with Naomi Osaka and a semifinal path toward Iga Swiatek.