Sun battles into Monterrey quarter-finals

Lulu Sun advanced to the last eight of the Monterrey Open by scraping past Argentinian Maria Lourdes Carle 6-3, 2-6, 7-6 (2) at Sonoma Club on Wednesday night.

Sun, ranked No 57, will face Russian Erika Andreeva next.

The New Zealander got the best of Frenchwoman Chloe Paquet (7-6 (3), 6-3) earlier in the tournament.

In the previous round of the Monterrey tournament, Carle — ranked No 86 — edged out Russian Veronika Kudermetova, the No 8 seed (1-6, 7-5, 6-4).

Monterrey WTA 500, other second-round results:

• 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: wednesday
• Yue Yuan (7) beat Petra Martic: 6-4, 6-1
• Erika Andreeva beat Danielle Collins (1): 1-6, 6-3, 6-3