At 18, Andreeva is the youngest player to reach back-to-back women’s singles quarter-finals at Roland Garros since Martina Hingis in 1998.
And she did so with victory against an opponent she admitted she does not like to practise with, let alone face for a place in a major quarter-final.
Andreeva edged a close first set with an assured service game after she broke Kasatkina’s serve in the eighth game.
She then battled back impressively from 5-3 down in the second set, winning four straight games to close out the match.
“It was a hell of a match,” said Andreeva, who lost to Kasatkina in the Ningbo final last year in China.
“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.”
