Slovenian Polona Hercog defeated Egyptian wildcard Mayar Sherif 7-6 (11), 4-6, 6-1 to reach the quarter-finals of the Colina Open at the Club Deportivo Universidad Catolica on Thursday night.

Hercog, ranked No 332, will play No 5 seed Diane Parry next.

The Slovenian won against Romanian Miriam Bulgaru (6-4, 4-6, 6-2) ahead of her victory.

In the previous round of the Chilean tournament, Sherif, ranked No 59, beat Argentinian Julia Riera (6-2, 6-4).

Colina WTA 125, other second-round results (Club Deportivo Universidad Catolica, USD 115.000, most recent results first):

• Nadia Podoroska (3) beat Daniela Seguel (WC): 6-1, 6-4
• Elizabeth Mandlik (7) beat Laura Pigossi: 3-6, 6-4, 6-0
• Sara Bejlek beat Ekaterine Gorgodze (Q): 6-1, 6-2
• Panna Udvardy beat Jessica Bouzas Maneiro: 6-4, 6-2
• Yulia Starodubtsewa beat Guillermina Naya (WC): 6-2, 6-0
• Diane Parry beat Fiona Ferro: 6-4, 6-1
• Leolia Jeanjean (8) beat Despina Papamichail: 2-6, 6-4, 6-2