BAD GASTEIN, Austria — Alize Cornet of France retired with a stomach illness while trailing 2-6, 6-2, 3-2 against Rossana De Los Rios at the Gastein Ladies today.

The second-seeded Cornet played her first match since winning the Budapest Grand Prix last Sunday — her first victory on the WTA Tour.

In the second round, De Los Rios will play Patricia Mayr of Austria, who beat Martina Muller of Germany 6-3, 6-3.

Third-seeded Caroline Wozniacki of Denmark cruised past Hsieh Su-wei of Taiwan 6-1, 6-1. The 30th-ranked Wozniacki dropped only six points on her serve and converted five of nine break points.

Wozniacki next plays Mariya Koryttseva of Ukraine, who defeated Tzipora Obziler of Israel 6-2, 6-1.

Fifth-seeded Timea Bacsinszky beat Liana Ungur of Romania 6-3, 3-6, 6-3. The 19-year-old Swiss will next meet Lucie Hradecka of the Czech Republic, who defeated Shuai Zhang of China 6-3, 6-0.

Also, Karolina Sprem of Croatia beat eighth-seeded Vera Dushevina of Russia 6-3, 6-4, and Anna-Lena Groenefeld of Germany defeated Julia Vakulenko of Ukraine 6-1, 6-1.