The 2012 WTA Tour Championships was a tennis tournament played at Istanbul, Turkey from October 23 to October 28, 2012. It was the 42nd edition of the singles event and the 37th edition of the doubles competition. The tournament was held at the Sinan Erdem Dome and was contested by eight singles players and four doubles teams. It was the larger of two season ending championships on the 2012 WTA Tour.
The tournament featured the top eight singles players and the top four doubles teams in the race to Istanbul. Victoria Azarenka, Maria Sharapova, Serena Williams, Agnieszka Radwaà Âska, Angelique Kerber, Petra Kvitová, Sara Errani and Li Na qualified for the singles competition. Kvitová withdrew from the championships after one match and was replaced by Sam Stosur. Radwaà Âska and Errani's round robin match set the record for the longest match in WTA Tour Championships history within the best-of-three system. Azarenka, Sharapova, Williams and Radwaà Âska qualified from the red and white groups for the semifinals. This was the first time since 1989 that the world's top four ranked women's players all made it to the semifinals of the tournament and the first time since 2003 that the top four seeds made the same stage. Williams went on to win her third season ending championship.
In the doubles Sara Errani and Roberta Vinci, Andrea HlaváÃÂková and Lucie Hradecká, Liezel Huber and Lisa Raymond and Maria Kirilenko and Nadia Petrova made up the teams. The competition started in the semifinals and it was the all-Russian pairing of Kirilenko and Petrova who claimed the title.
It was Williams' seventh title of the season and the 46th of her career. It was her third WTA Championships title, having also won in 2001 and 2009.
The 2012 WTA Championships took place at the Sinan Erdem Dome 23âÂÂ28 October 2012. It was the 41st edition of the event. The tournament was run by the Women's Tennis Association (WTA) and was part of the 2012 WTA Tour. It was the larger of the two season ending championships on the 2012 WTA Tour, the smaller being the latter was only for players who did not qualify for the WTA Championships.
The singles event featured eight players and began as a round robin event, split into two groups of four. Over the first four days of competition, each player met the other three players in their group, with the top two in each group advancing to the semifinals. The first-placed player in one group met the second-placed player in the other group, and vice versa. The winners of each semifinal met in the championship match.
The final standings of each group shall be determined by the first of the following methods that apply:
The doubles competition has four teams playing in a straight knockout format from the semifinal stage.
The total prize money for the 2012 WTA Championships was 4.9 million United States dollars.
On September 6, Victoria Azarenka and Maria Sharapova became the first two players to qualify for the championships.
Victoria Azarenka started the year strongly, winning the Apia International Sydney over Li Na, 6âÂÂ2, 1âÂÂ6, 6âÂÂ3. She then followed this up by winning her maiden grand slam at the Australian Open, defeating Maria Sharapova, 6âÂÂ3, 6âÂÂ0. With the win, she claimed the no. 1 ranking for the first time. Her winning streak continued in the Qatar Total Open. She won the title without dropping a set, beating Samantha Stosur, 6âÂÂ1, 6âÂÂ2 in the final. She then won her fourth title of the year at the BNP Paribas Open, once again defeating Sharapova, 6âÂÂ2, 6âÂÂ3. Her streak ended when she was defeated by Marion Bartoli in the quarterfinals of Sony Ericsson Open. During the clay season, she reached back-to-back finals, in Porsche Tennis Grand Prix, losing to Sharapova, 1âÂÂ6, 4âÂÂ6, and the Mutua Madrid Open, losing to Serena Williams, 1âÂÂ6, 3âÂÂ6. At the French Open, she lost in the fourth round to Dominika Cibulková, 2âÂÂ6, 6âÂÂ7<sup>(4âÂÂ7)</sup>. Seeded second at Wimbledon, she reached the semifinals, where she was defeated by Serena, 3âÂÂ6, 6âÂÂ7<sup>(6âÂÂ8)</sup>. At the Summer Olympics, she reached the semifinals, where she once again lost to Serena, 1âÂÂ6, 2âÂÂ6. However, she won the bronze medal match against Maria Kirilenko, earning Belarus their first tennis medal in history. She teamed up with Max Mirnyi for the mixed-doubles event, where she won the gold medal after defeating Laura Robson and Andy Murray in the gold-medal match. Seeded first at the US Open, Azarenka defeated the defending champion, Samantha Stosur, in the quarterfinals and Sharapova in the semifinals, but lost to Williams in her first US Open final, 2âÂÂ6, 6âÂÂ2, 5âÂÂ7. She then won the China Open as the top seed, defeating Sharapova 6âÂÂ3, 6âÂÂ1 in the final and did not drop a set in the tournament. Azarenka won her sixth title of the year at the Generali Ladies Linz defeating Julia Görges 6âÂÂ3, 6âÂÂ4, after blowing a 5âÂÂ0 in the second.
Maria Sharapova started 2012 by reaching the final of the Australian Open. Being the favorite for the title, she succumbed in a 3âÂÂ6, 0âÂÂ6 defeat by first time grand slam finalist, Victoria Azarenka, in the final. She followed up her consistent performance with back-to-back final appearances at the BNP Paribas Open, losing to Azarenka, 2âÂÂ6, 3âÂÂ6, and the Sony Ericsson Open, losing to Agnieszka Radwaà Âska, 5âÂÂ7, 4âÂÂ6. She then won her first title of the year at the Porsche Tennis Grand Prix, defeating world no. 1 Azarenka, 6âÂÂ1, 6âÂÂ4. She then also won the Internazionali BNL d'Italia, defeating Li Na, 4âÂÂ6, 6âÂÂ4, 7âÂÂ6<sup>(7âÂÂ5),</sup> coming back from 0âÂÂ4 in the second set. At the French Open, she won her fourth grand slam singles title, defeating Sara Errani, 6âÂÂ3, 6âÂÂ2, in the final. The victory gave her a career grand slam and returned her to world no. 1. Entering Wimbledon as the top seed, Sharapova lost in the fourth round to Sabine Lisicki, 4âÂÂ6, 3âÂÂ6. She rebounded well at the Summer Olympics, winning the silver medal after being outplayed by Serena Williams in the final, 0âÂÂ6, 1âÂÂ6. Despite skipping the US Open Series, she reached the US Open's semifinals, but lost to Azarenka. She then reached the final of the China Open, once again facing Azarenka but lost 3âÂÂ6, 1âÂÂ6.
On September 10, Serena Williams became the third player to qualify for the championships.
Serena Williams did not enjoy a good start of the season, injuring her ankle at her first tournament of 2012 in Brisbane and succumbing in the fourth round of the Australian Open to Ekaterina Makarova, 2âÂÂ6, 3âÂÂ6. In the clay season, she won her first title on clay since 2008 at the Family Circle Cup, losing only 15 games and defeating Lucie à  afáà Âová, 6âÂÂ0, 6âÂÂ1, in the final. She then won the Mutua Madrid Open over Victoria Azarenka, 6âÂÂ1, 6âÂÂ3. Coming to the French Open as a heavy favorite with a 17-match winning streak, Williams suffered a shocking first-round loss to Virginie Razzano, 6âÂÂ4, 6âÂÂ7<sup>(5âÂÂ7)</sup>, 3âÂÂ6. This marked Williams' first loss in the first round in a Grand Slam. However, she regrouped well and triumphed at Wimbledon by defeating Agnieszka Radwaà Âska in the final, 6âÂÂ1, 5âÂÂ7, 6âÂÂ2, for her 14th Grand Slam title, came back after losing a 4âÂÂ2 lead in the second. The following week, she defended her title at the Bank of the West Classic, defeating CoCo Vandeweghe, 7âÂÂ5, 6âÂÂ3. At the Summer Olympics, she won the gold medal after dominating Maria Sharapova, 6âÂÂ0, 6âÂÂ1, in the final. She lost just a total of 17 games during the event. This victory completed the career Golden Slam in singles, making her only the second woman (after Steffi Graf) to do so. She also won the doubles gold with sister Venus Williams for the third time, over Lucie Hradecká and Andrea HlaváÃÂková, 6âÂÂ4, 6âÂÂ4. Her 19-match winning streak ended at the Western & Southern Open to Angelique Kerber. At the US Open, she reached the final with the loss of just 19 games. In the final, she defeated world no. 1, Victoria Azarenka, 6âÂÂ2, 2âÂÂ6, 7âÂÂ5, for her second Grand Slam singles title of the year and 15th overall.
On September 24, Agnieszka Radwaà Âska became the fourth player to qualify for the championships.
Agnieszka Radwaà Âska began the season with a semifinal appearance at Apia International Sydney and a quarterfinal finish at the Australian Open. She claimed her first title of the year at the Dubai Tennis Championships over Julia Görges, 7âÂÂ5, 6âÂÂ4. She claimed her second title of the year at the Sony Ericsson Open by defeating Maria Sharapova in the final, 7âÂÂ5, 6âÂÂ4. In the clay season, she reached two semifinals, before losing in her opening match in the Internazionali BNL d'Italia to Petra Cetkovská, 4âÂÂ6, 6âÂÂ4, 1âÂÂ6, her first lost to a player other than Azarenka in the year. However, she bounced back by winning the Brussels Open over Simona Halep, 7âÂÂ5, 6âÂÂ0. At the French Open, she fell to Svetlana Kuznetsova in the third round, 1âÂÂ6, 2âÂÂ6. At Wimbledon, she reached the first Grand Slam singles final of her career, losing to Serena Williams, 1âÂÂ6, 7âÂÂ5, 2âÂÂ6. At the Summer Olympics, she was upset in the first round by Julia Görges, 5âÂÂ7, 7âÂÂ6<sup>(7âÂÂ5)</sup>, 4âÂÂ6. At the US Open, she lost for the first time to Roberta Vinci in the fourth round, 1âÂÂ6, 4âÂÂ6. She reached the final of the 2012 Toray Pan Pacific Open, where she was the defending champion, but was upset in the final by Nadia Petrova, 0âÂÂ6, 6âÂÂ1, 3âÂÂ6.
On October 4, three more spots were filled, as Angelique Kerber, Petra Kvitová, and Sara Errani qualified for the championships.
Angelique Kerber enjoyed her best season so far. She reached two semifinals in her Australian Open preparation, before losing in the third round of the Australian Open to Maria Sharapova, 1âÂÂ6, 2âÂÂ6. She then claimed her first career title at the Open GDF Suez, defeating Marion Bartoli, 7âÂÂ6<sup>(7âÂÂ3)</sup>, 5âÂÂ7, 6âÂÂ3. She won her second title of the year at the e-Boks Open, defeating defending champion Caroline Wozniacki, 6âÂÂ4, 6âÂÂ4. At the French Open, she fell in the quarterfinals to Sara Errani 3âÂÂ6, 6âÂÂ7<sup>(2âÂÂ7)</sup>. In the grass season, she reached the final of the Aegon International, losing to Tamira Paszek, 7âÂÂ5, 3âÂÂ6, 5âÂÂ7, despite having five match points and a 5âÂÂ3 lead. At Wimbledon, reached her second Grand Slam semifinal, but ended up losing to Agnieszka Radwaà Âska, 3âÂÂ6, 4âÂÂ6. At the Western & Southern Open, Kerber reached her first Premier 5 final and fourth final of the year, but lost to Li Na, 1âÂÂ6, 6âÂÂ3, 1âÂÂ6. At the US Open, after reaching the semifinals the previous year, she fell in the fourth round to Errani, 6âÂÂ7<sup>(5âÂÂ7)</sup>, 3âÂÂ6.
Petra Kvitová came into 2012 as a strong contender. She began the year by winning the Hopman Cup with TomÃ¡à ¡ Berdych over France's Marion Bartoli and Richard Gasquet. At the Australian Open, she reached the semifinals, losing to Maria Sharapova, 2âÂÂ6, 6âÂÂ3, 4âÂÂ6. At Wimbledon as the defending champion, she lost to eventual champion Serena Williams in the quarterfinals, 3âÂÂ6, 5âÂÂ7. She then claimed her first title of the year at the Rogers Cup, defeating Li Na, 7âÂÂ5, 2âÂÂ6, 6âÂÂ3, in the final. She claimed the US Open Series top spot, after winning the New Haven Open at Yale, defeating Russian Maria Kirilenko, 7âÂÂ6<sup>(11âÂÂ9)</sup>, 7âÂÂ5. At the US Open, she was upset by Marion Bartoli in the fourth round, 6âÂÂ1, 2âÂÂ6, 0âÂÂ6.
Sara Errani is having a breakthrough season. She reached her first Grand Slam quarterfinals at the Australian Open, losing to Petra Kvitová, 4âÂÂ6, 4âÂÂ6. She then won her first title of the year at the Abierto Mexicano Telcel, defeating Flavia Pennetta, 5âÂÂ7, 7âÂÂ6<sup>(7âÂÂ2)</sup>, 6âÂÂ0. She then claimed the Barcelona Ladies Open over Dominika Cibulková, 6âÂÂ2, 6âÂÂ2. At the Budapest Grand Prix, the Italian claimed her third title of the year over Elena Vesnina, 7âÂÂ5, 6âÂÂ4. At the French Open, Errani made a surprising run, reaching the final and earning her first top-10 wins over no. 10 Angelique Kerber, 6âÂÂ3, 7âÂÂ6,<sup>(7âÂÂ2)</sup> and no. 6 Samantha Stosur, 7âÂÂ5, 1âÂÂ6, 6âÂÂ3, before losing to Maria Sharapova, 3âÂÂ6, 2âÂÂ6, in the final. The result broke her into the top 10. At Wimbledon, Errani was on the receiving end of the first golden set in a Grand Slam, when she lost to Yaroslava Shvedova, 0âÂÂ6, 4âÂÂ6, in the third round. However, she bounced back by winning her fourth title at the Internazionali Femminili di Palermo over Barbora Záhlavová-Strýcová 6âÂÂ1, 6âÂÂ3. At the US Open, she reached her second Grand Slam semifinal, where she lost to Serena Williams, 1âÂÂ6, 2âÂÂ6.
On October 5, after reaching the semifinals of the China Open, Li Na became the last qualifier.
Li Na's season was rather lackluster. She started the year by reaching the final of the Apia International Sydney (where she was the defending champion), losing to Victoria Azarenka in the final, 2âÂÂ6, 6âÂÂ1, 3âÂÂ6. At the Australian Open, she lost to Kim Clijsters in the fourth round, 6âÂÂ4, 6âÂÂ7<sup>(6âÂÂ8)</sup>, 4âÂÂ6, after squandering four consecutive match points when ahead 6âÂÂ2 in the second-set tiebreak. She reached her second final of the year at the Internazionali BNL d'Italia, losing to Maria Sharapova, 6âÂÂ4, 4âÂÂ6, 6âÂÂ7<sup>(5âÂÂ7)</sup>, despite leading 4âÂÂ0 in the second set. At the French Open as the defending champion, she was upset by Yaroslava Shvedova in the fourth round, 6âÂÂ3, 2âÂÂ6, 0âÂÂ6. At Wimbledon, she fell to Sorana Cîrstea, 3âÂÂ6, 4âÂÂ6, in the second round. She then reached her third final of the year at the Rogers Cup, losing to Petra Kvitová, 5âÂÂ7, 6âÂÂ2, 3âÂÂ6. She won her first title of the year at the Western & Southern Open over Angelique Kerber, 1âÂÂ6, 6âÂÂ3, 6âÂÂ1, placing her second in the US Open Series. At the US Open, she received a shock exit in the third round to Laura Robson, 4âÂÂ6, 7âÂÂ6<sup>(7âÂÂ5)</sup>, 2âÂÂ6.
The first alternate for the championships is Australian Samantha Stosur. Stosur reached 2 finals in the year, but failed to capture a title. She reached her first final of the year at the Qatar Total Open losing to top seed Victoria Azarenka 1âÂÂ6, 2âÂÂ6. She reached her second final at the Kremlin Cup losing to Caroline Wozniacki 2âÂÂ6, 6âÂÂ4, 5âÂÂ7, despite leading 3âÂÂ1 in the final set. She reached the semifinals of the French Open losing to Sara Errani 5âÂÂ7, 6âÂÂ1, 3âÂÂ6. As the defending champion, she fell in the quarterfinals of the US Open losing to Azarenka 1âÂÂ6, 6âÂÂ4, 6âÂÂ7<sup>(5âÂÂ7)</sup>. The second alternate is Marion Bartoli, who is an alternate for the second straight year. She reached her first final at the Open GDF Suez losing to Angelique Kerber 6âÂÂ7<sup>(3âÂÂ7)</sup>, 7âÂÂ5, 3âÂÂ6. She reached her second final of the year at the Mercury Insurance Open losing to Dominika Cibulková 1âÂÂ6, 5âÂÂ7. She reached the quarterfinals of the US Open losing to Maria Sharapova 6âÂÂ3, 3âÂÂ6, 4âÂÂ6.
On September 6, Sara Errani and Roberta Vinci became the first doubles team to qualify for the championships.
Sara Errani and Roberta Vinci had a breakthrough season as a team winning 8 titles. They won their first two titles of the year back-to-back at the Monterrey Open over Date-Krumm & Zhang 6âÂÂ2, 7âÂÂ6<sup>(8âÂÂ6)</sup> and Abierto Mexicano Telcel over DomÃÂnguez Lino & Parra Santonja 6âÂÂ2, 6âÂÂ1. They won their third title at the Barcelona Ladies Open over Pennetta & Schiavone 6âÂÂ0, 6âÂÂ2. They then won 4 titles in a row, this begun in the Mutua Madrid Open winning 6âÂÂ1, 3âÂÂ6, [10âÂÂ4] and Internazionali BNL d'Italia 6âÂÂ2, 7âÂÂ5 both times over Makarova & Vesnina. They then won their first slam titles at the Paris against Kirilenko & Petrova 4âÂÂ6, 6âÂÂ4, 6âÂÂ2. They continued their winning ways at the UNICEF Open defeating Kirilenko & Petrova 6âÂÂ4, 3âÂÂ6, [11âÂÂ9]. They won their eight title and second slam at the US Open against HlaváÃÂková and Hradecká 6âÂÂ4, 6âÂÂ2. They also reached two other finals both losing to Russian pairings, at the Australian Open to Kuznetsova & Zvonareva 7âÂÂ5, 4âÂÂ6, 3âÂÂ6 and the Sony Ericsson Open to Kirilenko & Petrova 6âÂÂ7<sup>(0âÂÂ7)</sup>, 6âÂÂ4, [4âÂÂ10].
On September 10, two more teams qualified for the championships. They were Andrea HlaváÃÂková and Lucie Hradecká from Czech Republic and Liezel Huber and Lisa Raymond from the United States.
Andrea HlaváÃÂková and Lucie Hradecká had a solid season in 2012. They were able to reach 7 finals, winning 3 of them. Their first title came in ASB Classic over Görges & Pennetta 6âÂÂ7<sup>(2âÂÂ7)</sup>, 6âÂÂ2, [10âÂÂ7]. They then won their second title at the Memphis International over Dushevina & Govortsova 6âÂÂ3, 6âÂÂ4. They did not reach a final until the grass season, however it came in with 5 straight finals. The first one in the Wimbledon losing to Serena & Venus 5âÂÂ7, 4âÂÂ6 They then won the silver medal at the Summer Olympics losing once again to Serena & Venus 4âÂÂ6, 4âÂÂ6 They then won their biggest title of the year at the Western & Southern Open defeating Srebotnik & Zheng 6âÂÂ1, 6âÂÂ3. The following week, they reach the final of the New Haven Open at Yale losing to Huber & Raymond 6âÂÂ4, 0âÂÂ6, [4âÂÂ10]. They then reached their second slam final of the year at the US Open losing to Errani & Vinci 4âÂÂ6, 2âÂÂ6, their first loss to the team.
Liezel Huber and Lisa Raymond started early parts of the year strongly, winning 4 successive titles. They won the Open GDF Suez over Grönefeld & Martià7âÂÂ6<sup>(7âÂÂ3)</sup>, 6âÂÂ1 and the Qatar Total Open over Kops-Jones & Spears 6âÂÂ3, 6âÂÂ1. They then beat Mirza & Vesnina in the Dubai Tennis Championships 6âÂÂ2, 6âÂÂ1 and BNP Paribas Open 6âÂÂ2, 6âÂÂ3. They did not win any title until the New Haven Open at Yale over HlaváÃÂková & Hradecká 4âÂÂ6, 6âÂÂ0, [10âÂÂ4]. At the Summer Olympics, they lost to Maria Kirilenko and Nadia Petrova in the bronze medal match 4âÂÂ6, 6âÂÂ4, 6âÂÂ1. They finished runner-up at three tournaments this year, at the Apia International Sydney losing to Peschke & Srebotnik 1âÂÂ6, 6âÂÂ4, [11âÂÂ13], at the Aegon Classic to Babos & Hsieh 5âÂÂ7, 7âÂÂ6<sup>(7âÂÂ2)</sup>, [8âÂÂ10], and Aegon International to Llagostera Vives & MartÃÂnez Sánchez 6âÂÂ4 RET.
On October 20, the final spot went to the Russian pairing of Maria Kirilenko and Nadia Petrova after defeating co-contenders Raquel Kops-Jones and Abigail Spears in the semifinals of the Kremlin Cup
Maria Kirilenko and Nadia Petrova compiled a solid season. They won in their first final of the year at the Sony Ericsson Open defeating the Italian pairing of Errani and Vinci 7âÂÂ6<sup>(7âÂÂ0)</sup>, 4âÂÂ6, [10âÂÂ4]. They reached their first slam final as a team at the French Open once again facing Errani and Vinci, but this time they lost 6âÂÂ4, 4âÂÂ6, 2âÂÂ6. They once again faced Errani and Vinci for the third time in a final in the UNICEF Open, but once again fell short losing 4âÂÂ6, 6âÂÂ3, [9âÂÂ11]. At the Olympics, the Russians claimed the bronze medals defeating Americans Huber and Raymond. Petrova paired with Vania King at the Mercury Insurance Open and reached the final losing to Kops-Jones and Spears 2âÂÂ6, 4âÂÂ6. Petrova also reached another final, this time with Katarina Srebotnik at the Rogers Cup losing to Klaudia Jans-Ignacik and Mladenovic 5âÂÂ7, 6âÂÂ2, [7âÂÂ10].
The 2012 edition of the year-end championships featured three current or former World number ones, five Grand Slam champions, two Grand Slam finalists. Two competitors made their debut at the championships. The competitors were divided into two groups representing the colors of the flag of Turkey. The Red group consisted of no. 1 seed Victoria Azarenka, no. 3 seed Serena Williams, no. 5 seed Angelique Kerber and no. 8 seed Li Na. The White Group was composed of no. 2 seed Maria Sharapova, no. 4 seed Agnieszka Radwaà Âska, no. 6 seed Petra Kvitová and no. 7 seed Sara Errani. Samantha Stosur and Marion Bartoli served as alternates.
In the red group, their respective records in their group, World no. 1 Victoria Azarenka was 7âÂÂ14, Serena Williams was 16âÂÂ3, Angelique Kerber was 2âÂÂ8 and Li Na was 10âÂÂ10. Leading the group Azarenka, has a poor record against Williams being 1âÂÂ10 lifetime against her and having lost their last eight encounters, 4 times in 2012. Most recently they met in the finals of the 2012 US Open with Williams winning 6âÂÂ2, 2âÂÂ6, 7âÂÂ5. Against Kerber, she has a 2âÂÂ0 record winning both encounters in 2012, the last in the quarterfinals of the 2012 London Olympics 6âÂÂ4, 7âÂÂ5. Against Li, their head-to-head is tied at 4âÂÂ4 but Azarenka has won their last three encounters, 2 coming in 2012, last meeting a 3âÂÂ6, 6âÂÂ3, 6âÂÂ3 win in the quarterfinals of the 2012 Mutua Madrid Open. Williams on the other hand, is tied at 1âÂÂ1 head-to-head against Kerber losing their only encounter of 2012 at the 2012 Western & Southern Open 6âÂÂ4, 6âÂÂ4. Against Li, she is 5âÂÂ1 lifetime having won their last four encounters, the last encounter coming at the 2010 Wimbledon Championships 7âÂÂ5, 6âÂÂ3. Kerber and Li, the head-to-head is 5âÂÂ1 in favor of Li who has won their last two encounters. They met 3 times in 2012, most recently in the finals of the 2012 Western & Southern Open with Li winning 1âÂÂ6, 6âÂÂ3, 6âÂÂ1.
In the white group, in their head-to-heads with players within their group, Maria Sharapova was 12âÂÂ4, Agnieszka Radwaà Âska was 7âÂÂ11, Petra Kvitová was 8âÂÂ4, and Sara Errani was 1âÂÂ8. Like Williams, Sharapova has a good record against each member of her group. Against Radwaà Âska, she is 7âÂÂ2 lifetime however lost their only encounter of 2012 in the finals of the 2012 Sony Ericsson Open 7âÂÂ5, 6âÂÂ4. Against Kvitová, Sharapova leads their head-to-head 4âÂÂ2, winning their last three encounters most recently in the semifinals of the French Open 6âÂÂ3, 6âÂÂ3. Against Errani, Sharapova leads 1âÂÂ0 winning their only matchup in the finals of the French Open 6âÂÂ3, 6âÂÂ2. Radwaà Âska, on the other hand has a mixed record against Kvitová and Errani. She trails Kvitová 0âÂÂ3, with their last encounter coming at last year's Championships 7âÂÂ6(4), 6âÂÂ3 in a round robin matchup. However, against Errani, Radwaà Âska leads their head-to-head 5âÂÂ1 winning their last four encounters, most recently in the second round of the 2012 Mutua Madrid Open 6âÂÂ0, 6âÂÂ1. In the match-up between Kvitová and Errani, the Czech owns a 3âÂÂ0 record against Errani with all three meeting coming in straight sets all in 2012 most recently at the New Haven Open at Yale with a 6âÂÂ1, 6âÂÂ3 scoreline.
The four doubles teams started the semifinals without group play.
Below are the head-to-head records as they approached the tournament.
The action in this year's Tour Championships began with the White Group with Wimbledon finalist Agnieszka Radwaà Âska and 2011 Wimbledon champion Petra Kvitová. The Czech entered the match with a 25-match winning streak on indoor courts with her last defeat coming in Moscow in 2010. Radwaà Âska never having beaten Kvitová before raced out to an early 3âÂÂ0 lead only to see Kvitová even things out at 3âÂÂ3. Radwaà Âska however regrouped to win the next three games to take the first set 6âÂÂ3. Kvitová dropped her first two service games of the second, was able to break back once, but she was unable to threaten the steadier Radwaà Âska who closed out the match with a 6âÂÂ3, 6âÂÂ2 scoreline.
They were followed by Wimbledon, US Open and Olympic champion Serena Williams and Wimbledon semifinalist and first time qualifier Angelique Kerber. Similar to the first match Williams raced out to an early 3âÂÂ0 lead only to see Kerber even things out at 3âÂÂ3. However four games later Williams was able to break Kerber to win the first set 6âÂÂ4. The first three games went on serve until Williams was able to break for a 3âÂÂ1 lead. She held then broke Kerber again, serving out the match 6âÂÂ4, 6âÂÂ1.
The final match for the day featured French Open champion Maria Sharapova and French Open finalist Sara Errani. It was a rematch of the 2012 French Open finals. They went on serve until Errani failed to convert either break point at 15âÂÂ40 on the Sharapova serve. The Russian then broke serve at the eight game and closed it out 6âÂÂ3. Sharapova then carried on into the second set winning it 6âÂÂ2.
The second day began with the Red Group with Wimbledon, US Open and Olympic champion Serena Williams and 2011 French Open champion Li Na. The match began with Williams breaking Li's serve to take an early 1âÂÂ0 lead. However Li was quick to strike back reeling off four games to take a 4âÂÂ1 lead only to see Williams comeback to take four straight games herself to take a 5âÂÂ4 lead to serve for the set. Li was able to break at love for 5âÂÂ5 but was broken right back. Williams again served for the set but was broken again at love to send the set into a tie-breaker. Williams won it comfortably 7âÂÂ2 to take a one set lead. The second began in similar fashion with Li breaking for a 1âÂÂ0 lead only to see Williams again reel off four games to take a 4âÂÂ1 lead. The rest of the set went on serve until Williams closed out the match 7âÂÂ6<sup>(7âÂÂ2)</sup>, 6âÂÂ3.
They were followed by World No. 1 and Australian Open champion Victoria Azarenka and Angelique Kerber. Kerber raced out to an early 3âÂÂ1 lead. Azarenka however was able to level the match at 4âÂÂ4. The set went on serve and into a near-historic tie-break, where Kerber saved five set points â four with huge forehands â to claim it, 13âÂÂ11. It was the equal-longest tie-break in the history of the tournament and the first time Kerber had taken a set off Azarenka in their two prior meetings. The second set began with Azarenka building a 4âÂÂ2 lead only to see Kerber take three straight games to lead 5âÂÂ4. Serving to stay in the match Azarenka saved 2 match points with some ferocious ball striking to even the set at 5âÂÂ5. The set again went to a tie-break which Azarenka won 7âÂÂ2. Both players went toe to toe in the final set until Azarenka was able to break for 5âÂÂ3 to serve for the match. Kerber was able to break right back but was unable to hold serve while serving to stay in the match, with Azarenka closing out the 3 hour, 6 minute contest 6âÂÂ7<sup>(9âÂÂ11)</sup>, 7âÂÂ6<sup>(7âÂÂ2)</sup>, 6âÂÂ4.
The final match for the day featured Maria Sharapova and Agnieszka Radwaà Âska. It was a rematch of the Sony Ericsson Open finals. The match began with eleven straight holds of serve until Radwaà Âska was able to break Sharapova to take a one set lead 7âÂÂ5. Sharapova broke Radwaà Âska in the beginning of the first set but Radwaà Âska broke back immediately, Radwaà Âska then led 4âÂÂ2 with a break, Sharapova then took 3 games in a row but got broken when serving for the set at 5âÂÂ4. Sharapova then took the next two games to take it to a final set. At the third set both held serve until the fifth and sixth games where both traded breaks of serve. Sharapove then broke at the eleventh game of the set and served it out to win 5âÂÂ7, 7âÂÂ5, 7âÂÂ5.
The day began with the Red Group with Li Na and Angelique Kerber. Prior to the match Li lead their head-to-head 5âÂÂ1, and both are looking for their first win in the event. Kerber after an amazing display against Azarenka in a 3-hour loss started well and led 4âÂÂ2, however Li came back and won the first set 6âÂÂ4 after a doubles fault from the German. Li then closed it out in the second set winning it 6âÂÂ3.
They were followed by Victoria Azarenka and Serena Williams in a rematch of the 2012 US Open finals. The match began with seven straight holds of serve until Williams was able to break for a 5âÂÂ3 lead awith a chance to serve out the set. Azarenka was able to break straight back for 4âÂÂ5 but was unable to hold serve, double-faulting to give away the set one 6âÂÂ4. Azarenka began the second by reeling of three straight games for a 3âÂÂ0 lead breaking Williams twice along the way. However she was unable to hold on as Williams won four straight games herself to take a 4âÂÂ3 lead. Azarenka was able to hold for 4âÂÂ4. Williams held for 5âÂÂ4 with Azarenka now having to serve to stay in the match. She, however was not able to hold serve, double-faulting on match point. Williams have now improved her record against Azarenka to 11âÂÂ1 and advancing into semifinals as the Red Group's top player with a 3âÂÂ0 match win record and without the loss of a set. Azarenka will now have to defeat Li Na to advance to the semifinals and secure the year end No.1 or Maria Sharapova will have a chance to end the year at No.1 by winning the title.
The final match for the day featured Sara Errani and 2011 US Open champion Samantha Stosur who entered the event as an alternate due to the withdrawal of defending champion Petra Kvitová. Errani won the match 6âÂÂ3, 2âÂÂ6, 6âÂÂ0 with a doubles fault from Stosur. Stosur ended with 26 more winners but also 24 more unforced errors in an erratic display.