Russia's Anastasia Pavlyuchenkova also advanced to the second round of the clay-court WTA tournament, coming from one set down to defeat U.S. veteran Jill Craybas 3-6, 6-3, 6-3 in a rain-delayed match.
Eighth-seeded Iveta Benesova of the Czech Republic defeated Poland's Urszula Radwanska 3-6, 6-2, 6-2.
Carla Suarez Navarro of Spain, Alla Kudryavtseva of Russia and Gisela Dulko of Argentina also progressed to the second round.
Top-seeded Caroline Wozniacki of Denmark will play her first match Tuesday.
