Big-serving Karlovic reaches quarterfinals at Topshelf Open

S-HERTOGENBOSCH, Netherlands (AP) Fifth-seeded Ivo Karlovic of Croatia smacked 25 aces as he beat Tatsuma Ito of Japan 7-6 (5), 7-6 (3) to reach the Topshelf Open quarterfinals on Wednesday.

There, he'll face local favorite Robin Haase, who beat seventh-seeded Fernando Verdasco of Spain 7-6 (4), 6-3.

Verdasco had 10 aces, but lost the only service game of the second-round match.

In women's play, third-seeded Coco Vandeweghe of the United States; No. 5 Camila Giorgi of Italy, and No. 7 Kristina Mladenovic of France reached the last eight.

Vandeweghe won 7-5, 6-4 against Tatjana Maria; Mladenovic rallied past Kurumi Nara 6-7 (4), 6-3, 6-3, and Giorgi withstood 21 aces from Michaella Krajicek in a 6-7 (2), 6-2, 6-4 win.

Yaroslava Shvedova of Kazakhstan, who eliminated top-seeded Eugenie Bouchard in the first round, beat Marina Erakovic of New Zealand 6-4, 6-4.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide—from Peter King, Tom Verducci, Lee Jenkins, Andy Staples, Grant Wahl, and more—delivered straight to you, along with up-to-the-minute news and live scores.