Gauff's revamped serve powers her past Sonmez at US Open
Coco Gauff opened her 2026 US Open campaign with a 6-3 6-4 victory over Zeynep Sonmez, crediting her improved serve as the key factor. The 22-year-old had struggled with serving yips last year, prompting a coaching change and biomechanics work. Gauff says she now feels confident in that shot, a stark contrast to her tearful fourth-round exit in 2025.
Gauff's technical adjustments under biomechanics expert Gavin MacMillan focused on three specific elements: toss consistency, ball placement relative to her body, and wrist alignment. The changes produced measurable results at the Cincinnati Open, where data showed she maintained her serve velocity while improving accuracy toward the lines. Her 301 double faults this season remain the highest on tour, though her per-match average of 5.6 sits below many peers, indicating the issue is less frequent but still present.
The victory over Sonmez showcased the transformation in practical terms. Gauff won 93% of points when her first serve landed in during the opening set, and her clutch serving in the second set—including a precise ace out wide and a 115mph unreturned delivery—proved decisive. This marks a stark contrast to her 2025 campaign, when she practiced serves in the rain and cried during matches at the same tournament.
Gauff's serve revival could resonate beyond her own results, potentially influencing how young players and coaches approach technical breakdowns under pressure. Her willingness to overhaul mechanics mid-career, with outside specialists, may normalize seeking biomechanical help rather than relying solely on traditional coaching. For fans, her emotional arc—from visible distress to renewed confidence—could deepen engagement with her matches, while her success may reinforce the US Open's narrative appeal as a stage for personal redemption stories.