Overview

• Gauff confirmed she parted with coach Matt Daly and made the switch days before her opening match, calling it a sudden but necessary technical change.
• She will continue working with longtime mentor Jean‑Christophe Faurel while adding MacMillan to focus on serve mechanics.
• Gauff said she is obsessed with improving and set a goal of reducing her double‑fault rate to roughly 2%–3%.
• MacMillan is credited with helping Aryna Sabalenka rebuild her serve in 2022, a shift Sabalenka has said was pivotal to her resurgence.
• Veteran coach Rick Macci reported early signs of progress after Gauff’s fan‑week exhibition with Andre Agassi, though the competitive impact remains to be seen.