Nordea Open: Chirico upsets fourth seed Peterson, meets fellow American Liu

American Louisa Chirico beat Swede Rebecca Peterson, the No 4 seed, 7-6 (4), 5-7, 6-1 to advance to the last 8 of the Nordea Open at Båstad Tennisstadion in Bastad on Wednesday evening.

Chirico, ranked No 251, will face American Claire Liu, the No 7 seed, next.

Ahead of her victory, the American won against Norwegian Malene Helgo (6-1, 6-4).

Peterson, ranked No 75, won against Su Jeong Jang (7-6 (2), 6-4) in the previous round of the Swedish Open.

Bastad WTA 125K Series, other round of 16 results (Båstad Tennisstadion, clay, USD 115,000)

• Aliona Bolsova beat Polona Hercog: 6-3, 6-3
• Viktoriya Tomova (9) beat Chloe Paquet: 7-6 (12), 6-4
• Olga Danilovic (8) beat Nellie Taraba Wallberg (WC): 6-0, 6-2
• Tamara Zidansek beat Panna Udvardy (5): 6-2, 6-1
• Claire Liu beat Irina Khromacheva: 6-2, 6-4
• Yulia Putintseva (2) beat Katie Volynets: 6-0, 1-0 ret.
• Emma Navarro (1) beat Mirjam Bjorklund: 7-6 (2), 1-6, 6-1