Demetrius Freeman for The New York Times
Coco Gauff, at age 15 and in her first United States Open, got it just right.
What makes Naomi Osaka special is her capacity to lock in and play ruthless tennis, and then, with the handshake complete, to zoom out and have the humanity to sense the bigger picture.
It is a rare and appealing combination. And it was on full display in Arthur Ashe Stadium on Saturday night as Osaka, the world No. 1, played one of her finest and most focused matches to overwhelm Gauff, the sport’s latest prodigy, 6-3, 6-0.