Last week's title winners made impressive moves on the September 21, 2009 Sony Ericsson WTA Tour Rankings, but the most significant leap was made by someone who was idle.

Nineteen-year-old Caroline Wozniacki rose from No.6 to No.5, her career Top 5 debut. The recent US Open runner-up is the only teen in the Top 20. She made her Top 10 debut in May and went from No.8 to No.6 following her remarkable run in New York. Svetlana Kuznetsova dropping from fourth to sixth allowed the Dane to go up a spot and for Elena Dementieva to go from fifth to fourth.

Melinda Czink jumped from No.52 to No.37, her career Top 40 debut, after capturing her first Tour title in Québec City. She is now the highest-ranked Hungarian, one spot ahead of Agnes Szavay. She had been ranked outside the Top 100 to start the year, but made a steady ascension, thanks to a semifinal showing in Fès and quarterfinal appearances in Hobart, Charleston and Birmingham. She reached her previous career-high of No.50 in August.

Shahar Peer rose from No.57 to No.46 after winning her fourth career Tour singles title, but first since 2006, in Guangzhou. The Israeli, who did not lose a set all week, reached her career-high of No.15 in January 2007, but fell outside the Top 50 in April of this year and all the way to 68th in August. She did not return to the Top 50 until this week. Her best results of the year had been semifinal showings in Pattaya City and Estoril.