Coco Gauff has reached the semi-finals of a WTA Tour event for the first time as her run continued at the Linz Open.
The American, 15, beat top seed and world number eight Kiki Bertens, of the Netherlands, 7-6 (7-1) 6-4 in Austria.
It was Gauff's first win over a top-10 player, at an event in which she only came into the draw as a lucky loser.
"I'm really happy and proud of myself," said Gauff, who will face Germany's Andrea Petkovic in the semi-finals on Saturday.
She becomes the youngest player to reach a semi-final on the WTA Tour since the Czech Republic's Nicole Vaidisova won in Tashkent, Uzbekistan, in 2004.