San Diego Open: Vekic outlasts Stakusic to make quarter-finals

Croat Donna Vekic, the No 7 seed, won against Canadian qualifier Marina Stakusic 6-4, 3-6, 6-3 to advance to the quarter-finals of the San Diego Open at the Barnes Tennis Center on Thursday night.

Vekic, ranked No 28, will face Katie Boulter next.

The Croat beat American wildcard Katherine Hui (7-5, 6-2) ahead of her victory.

In the previous round of the San Diego tournament, Stakusic, ranked No 283, won against Russian qualifier Marina Melnikova (6-4, 5-7, 6-1).

San Diego WTA 500, other second-round matches (Barnes Tennis Center, hard, USD 922,573):

• Anna Blinkova beat Dayana Yastremska (5): 7-6 (6), 6-2
• Jessica Pegula (1) beat Jule Niemeier (Q): 6-0, 6-4
• Katie Boulter beat Beatriz Haddad Maia (2): 3-6, 6-3, 6-4
• Daria Saville (Q) beat Tatjana Maria: 5-7, 7-6 (2), 6-2
• Marta Kostyuk (6) beat Taylah Preston (WC): 6-4, 6-3
• Anastasia Pavlyuchenkova vs. Xinyu Wang
• Katerina Siniakova vs. Emma Navarro