Russian teenager Mirra Andreeva eased into the French Open quarterfinals on Monday with a straight-sets victory over Daria Kasatkina.
The 18-year-old, seeded sixth at Roland Garros, sealed a 6-3, 7-5 win in one hour 34 minutes against Russian-born Australian Kasatkina, ranked 17.
She next plays either third-ranked American Jessica Pegula or France's last remaining player in Paris, Lois Boisson, for a place in the quarterfinal.
"It was a hell of a match," said Andreeva.
"Honestly I'm so so happy I won, I hate playing against her, we practise a lot and even practice is a torture for me."
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Andreeva reached the semifinal last year with a shock quarterfinal win over Aryna Sabalenka.
She is hoping for another strong performance at Roland Garros, with both Sabalenka and reigning champion Iga Swiatek in the other half of the draw.