In a short match long on emotion, Naomi Osaka, the world’s No. 1 player, ended the latest Grand Slam run by the 15-year-old American Coco Gauff in the third round of the United States Open.

Osaka’s 6-3, 6-0 victory on Saturday night, in a sold-out Arthur Ashe Stadium, was no great surprise and certainly no discredit to Gauff, who has captured plenty of imaginations and attention this summer with her talent and fighting spirit.

But for all her precocious power, speed and clear potential, there is still a significant gap in consistency and technical proficiency between Gauff and the best players in the women’s game.

“I think she played amazing,” Gauff said of Osaka. “She had way more winners than I did, and it was hard to take control of the rallies, but I’ll learn a lot from the match. She’s the No. 1 player in the world right now, so I know what I need to do to get to that level.”