Petra Kvitová defeated Victoria Azarenka in the final, 7–5, 4–6, 6–3 to win the singles tennis title at the 2011 WTA Tour Championships. She was making her Tour Finals debut. Kim Clijsters was the reigning champion, but did not qualify this year due to an ongoing abdominal injury. In addition to Kvitová, Li Na made her debut in the event. Agnieszka Radwańska made her debut as a direct qualifier, after playing as an alternate in 2008 and 2009. Players Alternates Draw Finals Red group Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision. White group Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision. See also WTA Tour Championships appearances References Draw Singles 2011 WTA Tour Championships