Play resumed at the French Open on Thursday after a rain delay of one hour and 40 minutes.
Before the suspension, Serb 18th seed Jelena Jankovic and China's Zheng Jie had both made the third round.
Jankovic, a semi-finalist in 2007, 2008 and 2010 beat Spain's Garbine Muguruza 6-3, 6-0.
Zheng reached the last 32 with a 6-3, 6-1 win over Melanie Oudin of the United States.
German men's 16th seed Philipp Kohlschreiber reached the third round without hitting a ball when Taiwan opponent Lu Yen-Hsun withdrew with an ankle injury.
Rain had hit the schedule on Tuesday when four hours of play was lost.