Naomi Osaka powered past Coco Gauff 6-3, 6-2 with an impressive performance.
She took over an hour to book her spot in the US Open quarter-finals.
Inside a packed Arthur Ashe Stadium, the four-time Grand Slam champion dictated from the start, dominating rallies and serving with confidence.
She won 16 of her first 18 service points, showing the composure and authority that once carried her to world No.1.
Gauff struggled throughout with a faltering serve, committing five double faults and 33 unforced errors.
The American never found rhythm, gifting Osaka early breaks in both sets and failing to recover.
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