Birmingham, England (SportsNetwork.com) - Top-seeded former world No. 1 Ana Ivanovic and third-seeded American Sloane Stephens were a pair of third-round winners Thursday at the Aegon Classic, a grass-court Wimbledon tune-up.
The Serbian star Ivanovic drubbed American Lauren Davis 6-1, 6-1, while Stephens held off 15th-seeded fellow American Alison Riske 7-6 (7-4), 2-6, 6-1 at Edgbaston Priory Club.
An upset came when 16th-seeded Casey Dellacqua took down second-seeded fellow Aussie and former U.S. Open champ Samantha Stosur, 2-6, 6-2, 6-2.
In other seeded action, No. 6 Czech Klara Koukalova overcame American Coco Vandeweghe 3-6, 7-6 (7-3), 6-4, 43-year-old Japanese Kimiko Date-Krumm took out No. 7 defending Birmingham champion Daniela Hantuchova 6-4, 6-0 and No. 9 Chinese Zhang Shuai topped Czech Petra Cetkovska 6-0, 7-6 (8-6). Hantuchova titled here last year by beating Croat Donna Vekic in the final and was the runner-up in 2011.
Also on Thursday, Czech Barbora Zahlavova Strycova outlasted Hungarian Timea Babos, 6-2, 0-6, 6-3.