Coco Gauff ended the run of British qualifier Sonay Kartal to reach the Wimbledon fourth round.
The world number 298 tested the second seed in the first set before Gauff established control.
Kartal, the first British qualifier to reach the third round at SW19 since 1997, was beaten 6-4 6-0 under the roof on Court One.
Gauff will play fellow American Emma Navarro, the 19th seed, in the last 16.
