Top-seeded Alisa Kleybanova got off to a winning start at the Estoril Open by beating Olga Govortsova 6-2, 6-2 on Monday.
The Russian player will face Mathilde Johansson next after the Frenchwoman beat Ksenia Pervak 6-4, 6-3.
Sixth-seeded Elena Vesnina of Russia beat Barbara Luz 6-1, 6-1 to advance at the clay-court tournament, but seventh-seeded Jie Zheng of China exited after a 6-4, 6-2 defeat by Romina Oprandi.
In the men's draw, seventh-seeded South African Kevin Anderson beat Thiemo de Bakker 5-7, 6-3, 6-2. Victor Hanescu, Jeremy Chardy and Joao Sousa also won.