2008Li Na had not played a professional match in half a year and had resultantly slipped to 29th in the WTA rankings when she returned from her rib injury in January 2008 to compete at the 2008 Mondial Australian Women's Hardcourts in Gold Coast, Australia. In the first round, she narrowly defeated seventh seed Sybille Bammer 6–4, 4–6, 6–4. After a comfortable second round victory over wildcard Monique Adamczak, she was drawn to meet the top seed Nicole Vaidišová in the quarterfinals. Li won their encounter in straight sets, 6–3, 6–3, advancing to the semifinals where she edged past Patty Schnyder 3–6, 6–3, 7–5.[9] In the final, she narrowly prevailed against Victoria Azarenka 4–6, 6–3, 6–4 to score her first singles title since Guangzhou in 2004 and the second WTA singles title in her overall career.
Despite rising back up to World No. 24 following this victory, she then withdrew from the 2008 Medibank International in Syndey after suffering a right knee injury. Her failure to defend her previous year's semi-final performance at this event cost her 125 ranking points, which dipped her ranking back down to No. 30 in the rankings list for the week beginning 14 January.
Going in to the 2008 Australian Open, she had a further 140 ranking points to defend from her fourth round performance in 2007. Faced with a relatively lenient draw in the early rounds, she survived a close three-set tussle with Séverine Brémond in the first round before surpassing Maria Elena Camerin in straight sets in round two. A revitalised Marta Domachowska (who last year slipped down from the Top 100 to the bottom of the Top 200 before a late-season winning streak propelled her suddenly back up to within the Top 150) remained between her and the defence of her ranking points, and although Li Na won the first set convincingly 6–2, she faltered thereafter and finally ceded the match to her Polish opponent by a single break of serve in the closely fought deciding set.
Having slipped three places to World No. 33 by the time she entered the Tier II tournament at Antwerp in early February, she nonetheless progressed to the semi-finals with back-to-back straight-sets wins over Russian veteran Elena Likhovtseva 6–1, 6–1, Slovak World No. 45 Dominika Cibulková 6–4, 6–4 and on-form Swedish World No. 66 Sofia Arvidsson 7–5, 6–4. However, she came unstuck in the semi-finals against World No. 47 Karin Knapp, despite having taken an early lead with a break of service in the first set, ultimately ceding the match to her Italian opponent 4–6, 6–7(5). This tournament brought her back up within the Top 30 at World No. 29.
The very next week in the Tier I 2008 Qatar Total Open, Li met Likhovtseva again in the first round, and this time, after taking the first set comfortably, was challenged to a much tougher battle, but eventually won, 6–1, 0–6, 6–4. In Round Two, she scored her second straight-sets victory in four career head-to-heads against Russian World No. 6 Anna Chakvetadze (whom she had last beaten at the French Open in 2005), saving a set point in the first set tie-break, before recovering to win 7–6(7), 6–4. In the third round, she enjoyed a more comfortable victory over Israeli World No. 17 Shahar Pe'er, recovering from a 1–3 deficit in the second set to win 6–1, 6–3.
In the quarter-finals, she met her old rival and friend World No. 4 Jelena Janković, coming into the match with a winning 3–1 head-to-head record to her credit against the Serbian player. By defeating Janković 6–3, 6–4, she extended this record to 4:1 and moved into the semi-finals, where she played Vera Zvonareva of Russia, against whom she had won both of her previous encounters. Despite taking the first set 6–3, Li lost the second by the same scoreline; and although she was 3–2 up in the final set, she then ceded four successive games to her opponent to lose the match.
Her ranking having risen back to No. 23 on the strength of this performance, she was prevented from consolidating on this recovery by suffering a right knee injury which forced her to pull out of her scheduled entries into both the Tier II event at Bangalore in early March and the Tier I tournament at Indian Wells in the middle of the month. With 210 ranking points undefended from her semi-final performance at Indian Wells in 2007, her ranking is calculated to slip back down to the bottom end of the top 30 in the week beginning March 24, 2008.
She returned to action at the International Women's Open in Eastbourne, winning one round before losing to Nadia Petrova. She then contested Wimbledon, defeating Anastasia Rodionova 3–6, 6–0, 6–1 before losing 6–2, 6–4 to Anastasia Pavlyuchenkova.
At the Beijing Olympics, Li faced World No. 3 Svetlana Kuznetsova of Russia in her opening match. She disposed of her Russian opponent 7–6(5), 6–4, displaying a second victory among their five encounters. She then defeated Ayumi Morita 6–2, 7–5 in her second round match. Li advanced to the quarterfinals by beating Kaia Kanepi of Estonia, 4–6, 6–2, 6–0, in the third round. She went on to defeat one of the favourites, Venus Williams, in the quarterfinals 7–5, 7–5. Li was trailing 1–4 in the first set but then managed to strengthen her game to win in straight sets. She is also the only remaining Chinese singles player left in the women's draw, as Zheng Jie was defeated 6–4, 6–3 by Dinara Safina in the third round. Li lost her semi-final match to sixth seed Dinara Safina 7–6(3), 7–5. She then was defeated in the bronze final by Russia's Vera Zvonareva, 6–0, 7–5.
At the US Open, Li faced No. 24 Shahar Pe'er in her opening match. After losing the first set, Li quickly took control of the match and won 2–6, 6–0, 6–1. In the second and third round, She defeated Sara Errani of Italy 4–6, 6–2, 6–0 and Ekaterina Makarova of Russia 6–1, 4–6, 6–2 respectively, before falling 2008 Beijing Olympics gold medalist Elena Dementieva in the fourth round 6–4, 6–1. Li struggled with 3 winners and 28 unforced errors.
In the 2008 Porsche Grand Prix, the unseeded Li defeated No. 1 ranked Serena Williams in the second-round 0–6, 6–1, 6–4. Li became only the second Chinese player to defeat a world number one player, following Zheng Jie's victory over Ana Ivanović at 2008's Wimbledon.
2009Li withdrew from both the inaugural Brisbane International, where she was defending champion (as she won the title at Gold Coast in 2008), and the Australian Open because of a right-knee injury. She made her comeback at the Paris Open. In the first round, she beat Ágnes Szávay 7–6(6), 6–2. In the second round, she lost to second-seeded Jelena Janković 6–0, 3–6, 6–2.
In the first round of the Barclays Dubai Tennis Championships, Li lost in the opening round to Russian Elena Vesnina 1–6, 6–4, 6–4.
Unseeded at the Monterrey Open, she defeated World No. 10 and top seed Agnieszka Radwańska in a first round match that lasted over two hours 7–6(5), 4–6, 6–0. In the second round, she beat Petra Cetkovská 6–3, 6–4. She advanced to the semifinals after defeating Lucie Šafářová 6–3, 7–6(3). Li then moved into her fifth career tour final after beating sixth-seeded Iveta Benešová 6–3, 6–3. However, Li lost to second-seeded Marion Bartoli in the final in straight sets.
Li then played in the Premier event at Indian Wells, where she defeated Tamarine Tanasugarn, Patty Schnyder and Amélie Mauresmo, all in straight sets, to advance to the fourth round where she lost to eventual champion Vera Zvonareva, 4–6, 4–6.
She then reached the quarter-finals of the Premier event in Miami where she beat qualifier Urszula Radwańska in the first round and upset 29th seed Aleksandra Wozniak to reach the third round where she caused a big upset by defeating the previous week's Indian Wells champion, 6th-seeded Vera Zvonareva in three sets, 6–4, 3–6, 6–2. This victory was particularly important for Li, as she had been beaten by Zvonareva the week before at Indian Wells. She then faced unseeded Russian Ekaterina Makarova in the fourth round and beat her in three sets to set up a quarter-final match with the top seed and World No. 1 Serena Williams, a match which she lost in a tight three-setter, 6–4, 6–7(1), 2–6, because of her strong performance her ranking went up to World No. 29 from World No. 40.
Her next event was the second grand slam of the year, the French Open in Paris. As the 25th seed she won her first round 6–4, 6–2 against polish Marta Domachowska. She then defeated Timea Bacsinszky and Olga Govortsova. She then lost to unseeded, former world-number one Maria Sharapova in the fourth round, 4–6, 6–0, 4–6. after this impressive result she jumped 6 rankings up to No. 20.
She started her grass court season as the fourth seed at the AEGON Classic in Birmingham. She advanced to the final with a 6–4, 6–4 win over Maria Sharapova in the semifinals. However, Na was defeated by Magdaléna Rybáriková with a 0–6, 6–7 in the final.
Na is seeded 19th at the 2009 Wimbledon Championships. She defeated Galina Voskoboeva in the first round and Olga Govortsova in the second round but lost to #11 Agnieszka Radwańska in the third round.
At the 2009 Bank of the West Classic she lost to Serena Williams in the first round and at the 2009 LA Women's Tennis Championships p/b Herbalife she withdrew due to injury to lower ranked Urszula Radwańska of Poland.
No. 18 seed at the 2009 US Open she reached her first US Open quarterfinals where she lost to Kim Clijsters. En route to the quarterfinals she defeated Ioana Raluca Olaru, Michelle Larcher de Brito, Maria Kirilenko and Francesca Schiavone all in straight sets.
Seeded 15th at the Toray Pan Pacific Open, Li Na won her opening match against Alizé Cornet 6–4, 6–0. She then defeated Vera Dushevina 7–5, 6–0 before defeating Kateryna Bondarenko 2–6, 7–5, 6–3. In the quarterfinal, she defeated Victoria Azarenka in three sets, 7–6(7), 4–6, 7–6(4), though she failed to serve for the match twice in the last set. Li lost in the semifinals to Jelena Janković 6–4, 6–3.
Li finished the year at world number 15, her career high year-end ranking.
2010Li's first tournament of 2010 was the 2010 ASB Classic in Auckland. where she was seeded second. She was defeated by Kaia Kanepi in the first round 6–1 6–3. In the Medibank International she defeated 4th seed Caroline Wozniacki 2–6 6–3 6–2. She lost to Flavia Pennetta in the second round, 2–6, 6–7(4).
Li was seeded 16th at the 2010 Australian Open. She defeated World No. 4 Caroline Wozniacki in the 4th round 6–4 6–3 and then came from a set and 3–5 down to defeat World No. 6 Venus Williams 2–6, 7–6(4), 7–5 in her first ever Australian Open quarterfinal, and only her third ever Grand Slam quarterfinals. In the semi-finals she lost to Serena Williams 7–6(4), 7–6(1). As a result of this performance, Li was the first Chinese woman ever to be ranked in the Top 10 of women's professional tennis.
At the Barclays Dubai Tennis Championships, Li, the number 8 seed, defeated María José Martínez Sánchez 7–6(7) 2–6 6–4 in the second round. She then came from a 6–3 5–2 deficit to defeat Marion Bartoli in the 3rd round, 3–6 7–5 6–0. Li retired in her Quarterfinals match against Shahar Pe'er. Li was trailing 5–7 0–3 when she retired. Li continued her season at the inaugural Malaysian Open. As the #2 seed, she fell to Tatjana Malek in the first round. As the 7th seed at the 2010 BNP Paribas Open, Li fell to Elena Baltacha in the second round 6–7(5), 6–2, 6–7(7). Li was the 8th seed at the 2010 Sony Ericsson Open, but fell to Timea Bacsinszky in the second round.
At the 2010 Porsche Tennis Grand Prix, Li defeated defending champion Svetlana Kuznetsova in the second round before falling to eventual runner-up Sam Stosur 6–3, 6–3 in the quarterfinals. Li was the 11th seed at the 2010 French Open. She fell to eventual champion #17 Francesca Schiavone in the third round.
Li was seeded 1st at the 2010 AEGON Classic. She defeated 4th seed Aravane Rezaï in the semifinals and #2 seed Maria Sharapova in the final to win the tournament. With the win Li will return to the top ten in the WTA rankings. Seeded 7th at the 2010 AEGON International, Li retired with a knee injury when she leads 7–6 (6) Elena Baltacha in the first round.
Li is seeded 9th at the 2010 Wimbledon Championships. She defeated 7th seed Agnieszka Radwańska to advance to the quarterfinals at Wimbledon for the second time in her career where she lost to world #1 and defending champion Serena Williams 7–5, 6–3. By going into the last eight Li will once again return to the top ten in the WTA rankings. At the 2010 US Open, she started off as the #8 seed, but suffered an upset to Kateryna Bondarenko 2–6, 6–4, 6–2.
2011Li played in 2011 Medibank International Sydney as the #8 seed, making fast work with Australian wildcard Anastasia Rodionova 6–1, 6–2 and winning a tough three-set match against Virginie Razzano 6–4, 1–6, 6–4 in the first two rounds. In the quarterfinals she met two time Grand Slam winner Svetlana Kuznetsova and came through with a 3–6, 7–6(4), 6–0 win. She defeated surprise qualifier Bojana Jovanovski in the semifinals 7–6(5), 6–3 to advance to her eighth WTA final.[10] Li faced World #3 Kim Clijsters in the final, and despite trailing 5–0 in the first set, Li would go on to defeat Clijsters 7–6, 6–3.
Li was the 9th seed at the 2011 Australian Open, where she reached her first Grand Slam singles final. On her way there, she ousted the No. 8 seed Victoria Azarenka in straight sets, 6–3 6–3. She then defeated world No. 1 Caroline Wozniacki in the semi-finals to reach her first Grand Slam final after saving a match point in the second set, 3–6 7–5 6–3. She became the first Chinese player to reach a Grand Slam singles final, facing No. 3 seed Kim Clijsters (whom she defeated at the Medibank International). Although Li claimed the first set, Clijsters was able to rally back and claim the championship, winning 3–6, 6–3, 6–3. Despite the loss, Li's ranking rose to a career high of world #7.
Despite a good early start to the season, Li then has now in a 5 match losing streak after her lost in the final of the Australian Open, she lost in the first round of 2011 Dubai Tennis Championships and 2011 Qatar Ladies Open. After a receiving bye in the first round, she lost in the second round of 2011 BNP Paribas Open. Despite this, after Indian Wells she will reach a career high ranking of World #6 due to Jelena Jankovic's failures to defend her points.
Li's losing streak then continued when she was upset in the 2011 Sony Ericsson Open by Swede Johanna Larsson 5–7,7–6,6–7. With this loss, and Andy Murray's loss at Miami, both Australian Open finalists have yet to win a match since the first Grand Slam. Despite Li's successive losses, her #6 Ranking was ensured due to Samantha Stosur's inability to defend her clay season points. After a week, she fell back to #7. Li then broke her losing streak by winning her first round match against Anastasija Sevastova in Stuttgart, 6–2, 6–3. However, she subsequently lost to Sabine Lisicki in the second round, 4–6, 5–7. Even, though she was not able to defend all her Stuttgart ranking points,she rose back to #6, with Samantha Stosur's inability to defend her own Stuttgart points.
She entered the 2011 Mutua Madrid Open as sixth seed. In first two rounds, she defeated María José Martínez Sánchez 6–4, 7–6(6), and Iveta Benešová 6–1, 6–4. In the third round she defeated Roberta Vinci 2–6, 6–2, 6–1 coming back from a set deficit. She defeated Bethanie Mattek-Sands 6–4, 3–6, 6–4, coming back from, 3–4, one break down in the deciding set. This victory marked her the first semifinals appearance in Madrid, where she eventually lost to Petra Kvitová 3–6, 1–6.
Li's resurgence continued in 2011 Internazionali BNL d'Italia. Seeded 4th, she received a bye in the first round. She won her opening match against Lourdes Domínguez Lino 6–4, 6–2. She defeated Jarmila Gajdošová 6–2, 6–1, and Gréta Arn 6–3, 6–1 in the next two rounds en route to her back-to-back semifinals on clay court.However, she lost to Samantha Stosur 7–6(6), 6–0.
Li is the 6th seed at the 2011 French Open and defeated Barbora Záhlavová-Strýcová, Silvia Soler Espinosa,Sorana Cîrstea, 9th seed Petra Kvitova, 4th seed Victoria Azarenka, 7th seed Maria Sharapova to reach her second straight Grand Slam singles final, where she will face 5th seed and defending champion Francesca Schiavone.
http://en.wikipedia.org/wiki/Li_Na_(tennis)