Frenchwoman Kristina Mladenovic, the No 6 seed, won against Romanian Alexandra Ignatik 7-5, 6-3 to reach the quarter-finals of the Lasi Open at Baza Sportivă Ciric in Iasi on Thursday.
Mladenovic, ranked No 112, will play second seed Panna Udvardy next.
The Frenchwoman defeated Croat Tena Lukas (2-6, 7-6 (5), 6-3) ahead of her victory.
In the previous round, Ignatik, ranked No 153, beat Russian Natalia Vikhlyantseva (6-4, 6-3).
Iasi WTA 125, other second-round results (Baza Sportivă Ciric, clay, USD 115.000, most recent results first):
- Yuki Naito vs. Paula Ormaechea
- Nadia Podoroska vs. Ekaterine Gorgodze
- Ana Bogdan vs. Anastasia Zakharova
- Panna Udvardy beat Reka Luca Jani: 6-0, 7-6 (6)
- Maja Chwalinska beat Olga Danilovic (4): 7-6 (4), 6-4
- Darya Astakhova (Q) beat Cristina Dinu (Q): 6-2, 6-2
- Rebeka Masarova beat Nastasja Schunk: 4-6, 7-6 (5), 6-4