From the WTA:
Eight of the players in the 2008 Top 10 are also in the 2009 Top 10: Serena Williams (who went from No.2 in 2008 to No.1 in 2009); Safina (No.3 to No.2); Svetlana Kuznetsova (No.8 to No.3); Elena Dementieva (No.4 to No.5); Venus Williams (No.6 both years); Jelena Jankovic (No.1 to No.8); Vera Zvonareva (No.7 to No.9) and Agnieszka Radwanska (No.10 both years).
New faces in the Top 10 this year were Caroline Wozniacki (who went from No.12 in 2008 to No.4 in 2009) and Victoria Azarenka (No.15 to No.7). Last year's year-end No.5, Ana Ivanovic, finished this year at No.22; and last year's year-end No.9, Maria Sharapova, finished this year at No.14.
Kim Clijsters, who wasn't even on last year's year-end rankings, ended at No.18 after a phenomenal comeback, highlighted by winning the US Open.