Overview

• Naomi Osaka beat world No. 3 Coco Gauff 6-3, 6-2 in 64 minutes to reach her first US Open quarterfinal in five years.
• Gauff committed 33 unforced errors, with 20 on the forehand, and did not create a break point, while Osaka finished with 12 unforced errors.
• The 21-year-old said she felt “discombobulated,” pointed to serving progress over the tournament, and admitted she “kind of broke down” afterward.
• Gauff arrived at Flushing Meadows after replacing coach Matt Daly with biomechanics specialist Gavin MacMillan to tackle persistent serving problems.
• Justine Henin told Eurosport France that Gauff’s forehand was “catastrophic” against Osaka and warned of a worrying lack of evolution in her game.