Strasbourg - Third-seeded Samantha Stosur has advanced to the quarter-finals of the Strasbourg International with a walkover after opponent Lesia Tsurenko withdrew with a back injury on Tuesday.
Stosur, a former finalist at the French Open, will next play Ajla Tomljanovic, who defeated Shelby Rogers 7-6 (6), 3-6, 6-2.
Also, Sloane Stephens lost only five points on her first serve to join them in the quarterfinals with a 6-3, 6-4 win over sixth-seeded Coco Vandeweghe in an all-American match at the clay-court tournament.
Next up for Stephens will be either second-seeded Jelena Jankovic or Zheng Saisai.
Results from the WTA Strasbourg Open on Tuesday (x denotes seed):
Ajla Tomljanovic (CRO) bt Shelby Rogers (USA) 7-6 (8/6), 3-6, 6-2
Samantha Stosur (AUS x3) bt Lesya Tsurenko (UKR) retired
Sloane Stephens (USA) bt Coco Vandeweghe (USA x6) 6-3, 6-4