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Coco Gauff Fires Coach Ahead of US Open: American Star Seeks Fresh Start After Early Wimbledon Exit

Coco Gauff ended her partnership with coach Matt Daly after winning three titles together and hired biomechanics expert Gavin MacMillan to improve her inconsistent performance.

  • On Wednesday, ESPN reported Coco Gauff parted ways with coach Matt Daly and replaced him with biomechanics expert Gavin MacMillan, who has already joined her in New York ahead of the US Open.
  • After Wimbledon and a mixed hard‑court swing, Gauff struggled with her serve, leading the WTA in double faults and hitting a career-high 23 at the Canadian Open.
  • Daly helped Gauff win the China Open, WTA Finals and 2025 Roland Garros, while MacMillan, founder of Sport Science Lab, improved Sabalenka's serve; ESPN analyst Darren Cahill said, 'A lot of things add up and this could be a really good relationship.'
  • As the US Open approaches, Coco Gauff faces pressure to adapt quickly with her title defence looming and the tournament starting August 24 at Flushing Meadows, New York; observers will watch if the change yields results within two weeks.
  • Defying Rick Macci's counsel, Coco Gauff cut her coach ahead of Flushing Meadows, gambling MacMillan's biomechanics can stabilize her serve and reshape her long-term prospects.
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The US Sun broke the news in New York, United States on Wednesday, August 20, 2025.
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