Top-seeded Caroline Wozniacki of Denmark, who lost to Clijsters in the final in New York, retired when leading Anne Kremer of Luxembourg 7-5, 5-0. She received treatment for her left leg and back.

Kremer was a late replacement for American teenager Melanie Oudin, who withdrew hours before her first match because of illness.

Clijsters is a five-time champion of the tournament.

Source: AP