The four-time champion progressed in straight sets and will face Elena Rybakina after the 12th seed beat Ostapenko - who has never lost to Swiatek
Swiatek is through to the fourth round after beating Jaqueline Cristian 6-2 7-5.
Read the latest odds and tips ahead of the weekend’s French Open matches at Roland Garros
The 24-time grand slam champion had expressed a desire to watch PSG face Inter Milan in Munich
The 18-year-old Brazilian has a huge fan base at tournaments.
There will be an all-British clash in the French Open third round as Fearnley faces Norrie