Andreeva upsets Collins, advances to last 8 in Monterrey

Erika Andreeva won against American Danielle Collins, the top seed, 1-6, 6-3, 6-3 to move into the last 8 of the Monterrey Open at Sonoma Club on Wednesday night.

Andreeva, ranked No 89, will play the winner of the match between New Zealander Lulu Sun and Argentinian Maria Lourdes Carle next.

In the previous round of the Monterrey tournament, the 20-year-old Russian beat Ukrainian Anhelina Kalinina (6-1, 6-4).

Monterrey WTA 500, other second-round results (Sonoma Club, hard, USD 922.573, most recent results first):

• Camila Osorio vs. Emma Navarro
• Ekaterina Alexandrova vs. Renata Zarazua
• Magdalena Frech vs. Lina Glushko
• Elina Avanesyan vs. Elina Svitolina
• Linda Noskova vs. Xiyu Wang
• Lulu Sun vs. Maria Lourdes Carle