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Coco Gauff’s Serve Woes Persist After Cincinnati Quarterfinal Loss

Legendary coach Rick Macci proposes a science-based plan to fix her faltering second serve before the US Open.

Coco Gauff reacts in the Cincinnati Open quarterfinal match between Coco Gauff and Jasmine Paolini at the Lindner Family Tennis Center in Mason, Ohio, on Friday, Aug. 15, 2025. Paolini won 2-6, 6-4, 6-3.
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Overview

  • In her Cincinnati Open quarterfinal loss to Jasmine Paolini, Gauff tallied 16 double faults and 62 unforced errors in a 2-6, 6-4, 6-3 defeat.
  • Former players and coaches such as Rennae Stubbs, Lindsay Davenport and Chanda Rubin have highlighted her serve inconsistency and its toll on confidence and match rhythm.
  • The world No. 2 and two-time Grand Slam champion has committed more than 320 double faults through 14 tournaments this season, leading the WTA Tour in service errors.
  • Gauff restructured her coaching setup—parting with Brad Gilbert and adding Matt Daly alongside Jean-Christophe Faurel—but her serving troubles have lingered.
  • Rick Macci has offered to collaborate with a biomechanics expert to retool her second serve motion in time for the US Open.