Bartoli defeated Vania King 6-4, 5-7, 6-4 and will next meet the winner of Thursday's match between Misaki Doi and Christina McHale. Bartoli has reached a career-best No. 7 spot in the world rankings.
In other second-round matches Thursday, Yung-Jan Chan eliminated Heather Watson 6-3, 7-6 (7-2), Varvara Lepchenko defeated Chanelle Scheepers 6-4, 6-2 and fourth-seeded Nadia Petrova was a 6-4, 6-3 winner over Alexa Glatch.
No. 2 seed Dominika Cibulkova will be in action Thursday when she meets Marina Erakovic in the second round.
Millions of Getty images now available for free via embed tool
Boston schools pull out free condoms over wrapping complaints