2011 Commonwealth Bank Tournament of Champions

WTA Singles Rankings (24 October 2011)
Sd	Player	Rk	Won
1	Marion Bartoli	9	Osaka
2	Peng Shuai	16	Wild Card
3	Sabine Lisicki	18	Birmingham Dallas
4	Roberta Vinci	22	Barcelona 's-Hertogenbosch Budapest
	Daniela Hantuchová	23	Pattaya City
	Ana Ivanovic	26	Wild Card
	Anabel Medina Garrigues	28	Estoril Palermo
	Nadia Petrova	31	Washington, D.C.

Marion Bartoli reached the semifinals of the French Open.

Marion Bartoli[1]
Bartoli is making her second appearance at the championships after finishing runner-up at the inaugural Tournament of Champions in 2009. She has produced a good year, returning to the top 10 and reaching 14 quarterfinals, the most of any player. The Frenchwoman reached five finals in the year, winning two in the Aegon International over Petra Kvitová, 6–1, 4–6, 7–5, and the HP Open over Samantha Stosur, 6–3, 6–1, earning her a spot in the championships. She lost in the finals of the BNP Paribas Open to Caroline Wozniacki, the Internationaux de Strasbourg to Andrea Petkovic, and the Bank of the West Classic to Serena Williams. She also reached her second career Grand Slam semifinal at the French Open. At the other Grand Slams, she reached the quarterfinals of Wimbledon and the second rounds of the Australian Open and the US Open. Her biggest wins of the year were against Serena Williams and Kim Clijsters. She also barely missed originally qualifying for the WTA Tour Championships, but filled in for Maria Sharapova when she sprained her ankle.

Peng Shuai[1]
Peng was one of the wildcard recipients in the tournament. She has had a consistent year and was able to crack the top 20 for the first time and reached a new career high of number 14 after reaching the quarterfinals of the Western & Southern Open. She reached her first premier-level final at the Brussels Open, losing to Caroline Wozniacki, 6–2, 3–6, 3–6. She also reached four other semifinals. She reached the fourth round of all the Grand Slams except the French Open, where she reached the third round. Her big wins of the year came against Li Na and Vera Zvonareva.

Sabine Lisicki reached her first career Slam semifinal.

Sabine Lisicki[1]
Lisicki has had a breakthrough year, including improving her ranking from a low of no. 218 in March, to a career-best of no. 17 in September. She also won two titles in the year, the Aegon Classic over Daniela Hantuchová, 6–3, 6–2, and in the Texas Tennis Open over Aravane Rezaï, 6–2, 6–1, which made her qualify for the event. She made her maiden Grand Slam semifinal at Wimbledon before losing to Maria Sharapova, the first time a German woman had reached a Grand Slam semifinal since Steffi Graf there in 1999. She also reached the fourth round of the US Open and the second round of the French Open. She has earned top-10 wins over Samantha Stosur, Li Na, and Marion Bartoli.

Roberta Vinci[1]
Vinci has had her best season to date, reaching a career high of no. 18 in the world and winning three titles, the third most singles titles in the season. Her titles were all international events, which was her pass to the event, winning in the Barcelona Ladies Open over Lucie Hradecká, 4–6, 6–2, 6–2, the UNICEF Open over Jelena Dokić, 6–7^(7–9), 6–3, 7–5, and the Poli-Farbe Budapest Grand Prix, defeating Irina-Camelia Begu, 6–4, 1–6, 6–4. However, she has had an inconsistent year, including losing eight in a row before winning Barcelona. At the Grand Slams, she reached the first round of the Australian Open and reached the third rounds of the other slams. She earned her biggest win of her career by defeating world no. 1 Caroline Wozniacki in the third round of the Rogers Cup.

Daniela Hantuchová earns her first win over a World no.1.

Daniela Hantuchová[1]
Hantuchová has had a bad start of the season, losing her first four matches, before triumphing in the PTT Pattaya Open over Sara Errani, 6–0, 6–2, without dropping a set in the tournament. It was also her first title since October 2007. She also reached the final of the Aegon Classic, losing to Sabine Lisicki, 3–6, 2–6. She had mixed results in the Grand Slams, losing in the fourth round of the French Open, third round of the Wimbledon, and the first rounds of the Australian Open and the US Open. She claimed major upsets across the year, including defeating Caroline Wozniacki, her first win against a reigning world no. 1, and claiming her first win over Venus Williams in 11 matches. She also had top-10 victories against Vera Zvonareva, Li Na, Marion Bartoli, and Victoria Azarenka.

Ana Ivanovic[1]

Ana Ivanovic is the defending champion.

Ivanovic is the defending champion, after defeating Alisa Kleybanova in the final, and is one of the wildcard recipients. The Serb endured a horror 2011 season, being the only one not to reach a final in the field and only made it to two semifinals in the Aegon Classic and the Mercury Insurance Open. However, she was able to go deep in two Premier Mandatory, reaching the quarterfinals of the BNP Paribas Open and the China Open. She was also able to earn top 10 victories over Jelena Janković and Vera Zvonareva. Her performances at the Grand Slams were very poor, being defeated in the first round of the Australian and French Opens, the third round at Wimbledon and the fourth round of the US Open. She won only four Grand Slam matches the entire year (not including a walkover victory against Petra Cetkovská, who withdrew from their second round match at the US Open due to injury), one less than her tally from 2010.

Anabel Medina Garrigues[1]
Medina Garrigues is competing for the second time, the first being in 2009. She has won two titles in the year, winning her first titles in three years. She won the Estoril Open, defeating Kristina Barrois, 6–1, 6–2, and the Internazionali Femminili di Palermo, defeating Polona Hercog, 6–3, 6–2. These wins made her the player with most clay titles of all active players with 10, surpassing Venus Williams. Her title at Palermo was her fifth at the event, and she became only the fourth active player to win the same tournament five times. In the Grand Slams, she reached the first round of the Australian Open, second round of the French Open, the first round at Wimbledon, and the third round of the US Open. She has beaten two top-20 players in the year, Shahar Pe'er and Marion Bartoli.

Nadia Petrova[1]
Petrova is one of the debutants in the event. She won her first title since November 2008 at the Citi Open, defeating Shahar Pe'er in the final, 7–5, 6–2. This made her qualify for the event. However, she has only reached two other quarterfinals. At the Grand Slams, she reached the fourth round at Wimbledon, the third rounds of the Australian Open and the US Open, and the first round of the French Open. She has beaten top-20 players, Roberta Vinci, Ana Ivanovic, and Anastasia Pavlyuchenkova.