Naomi Osaka, a four-time Grand Slam champion, advanced to the quarterfinals of the 2025 US Open by defeating Coco Gauff 6-3, 6-2 in a dominant performance on Arthur Ashe Stadium. Osaka, seeded 23rd, showcased her confidence and improved form, marking her first major quarterfinal appearance since 2021 and her best result since returning from maternity leave in 2023. Osaka’s victory was characterized by her patient strategy, effective use of her powerful forehand, and consistent play, which exploited Gauff's recent struggles with her serve and groundstrokes. Gauff, 21, who entered the tournament with renewed focus after team changes and a long-term development plan, appeared nervous and inconsistent, making 33 unforced errors and double faults, which contributed to her early exit. Osaka’s win highlights her resurgence and momentum, as she has now won 10 of her last 11 matches and maintains a strong record of reaching the quarterfinals or beyond in Grand Slams, with a history of winning the tournament each time she reaches this stage. Osaka expressed her joy and motivation, recalling her childhood admiration for Gauff and her desire to compete again on her favorite court. She will face Karolina Muchova in the next round. The match underscored Osaka’s return to top form and her ability to capitalize on opponents’ vulnerabilities, while Gauff continues to work through technical adjustments and mental challenges after a turbulent summer.