For the first time in her 62-week reign as the Hologic WTA Tour's No.1 player, that position could have been snatched away during Roland Garros.
Muchova, a former Top 20 player who is now ranked No.43, saved a match point while trailing 5-2 in the third set, then won five games in a row.
Casper Ruud vs Alexander Zverev will take place in the second semi-final of the 2023 French Open on June 9.
Iga Swiatek vs Karolina Muchova will take place in the second final of The French Open 2023 on June 10.
Carlos Alcaraz vs Novak Djokovic will take place in the first semi-final of the 2023 French Open on June 9.
Karolína Muchová vs Aryna Sabalenka will take place in the first semi-final of The French Open 2023 on June 8.
Iga Świątek vs Beatriz Haddad Maia will take place in the second semi-final of The French Open 2023 on June 8. will take place in the second semi-final of The French Open 2023 on...
She will next face unseeded Karolina Muchova, a former Top 20 player, for a spot in her second Grand Slam final of the year.
Beatriz Haddad Maia vs Ons Jabeur will take place in the third quarter-final of The French Open 2023 on June 7.
Iga Świątek vs Coco Gauff will take place in the last quarter-final of The French Open 2023 on June 7.