2011 WTA Tour Championships – Singles
Petra Kvitová defeated Victoria Azarenka in the final, 7–5, 4–6, 6–3 to win the Singles title at the 2011 WTA Tour Championships. It was her first appearance at the event. Kim Clijsters was the defending champion, but did not qualify this year due to an abdominal injury that ended her season prematurely. Li Na also made her debut in the event. Agnieszka Radwańska made her debut as a direct qualifier, after playing as an alternate in 2008 and 2009.