2006–2009 In 2006, King won her only WTA Tour singles title at the
Bangkok Open, a Tier-III tournament where she defeated
Tamarine Tanasugarn in the final. In November, she achieved her career-high singles ranking of world No. 50. In 2009, she reached the mixed-doubles final at the
French Open alongside Brazilian player
Marcelo Melo, losing to top-seeded team
Liezel Huber/
Bob Bryan. King lost in the second round of the
2009 Wimbledon Championships to No. 15,
Flavia Pennetta. She played in the ladies' doubles with
Anna-Lena Grönefeld, losing in the quarterfinals to eventual champions
Venus and
Serena Williams. At the
US Open, King was granted a wildcard and had her best singles Grand Slam performance. She was defeated in the third round by world No. 22,
Daniela Hantuchová.
2010 King began the year ranked No. 80 in the world at the
Brisbane International. She reached the second round of the singles tournament, losing to
Andrea Petkovic. In doubles, she partnered with Anna-Lena Grönefeld and lost in the first round to
Timea Bacsinszky and
Tathiana Garbin. King and Grönefeld fared better at the
Sydney International, where they were seeded fourth. They lost in the semifinals to Garbin and
Nadia Petrova. In the singles tournament, King failed to qualify, losing in the first round of the qualifying tournament to top seed
Ágnes Szávay, who went on to defeat
Jelena Janković in the first round of the tournament. At the
Australian Open, King lost in the second round to
Roberta Vinci. In doubles, she partnered with Grönefeld again and entered the tournament seeded 14th. They lost in the second round to
Svetlana Kuznetsova and
Victoria Azarenka. King's next bigger tournament was the
Memphis Cup in mid-February. She entered the singles draw seeded seventh and lost in the second round to
Sofia Arvidsson. In the
doubles tournament, she and partner
Michaëlla Krajicek were seeded third and won the title without dropping a set, defeating
Bethanie Mattek-Sands and Shaughnessy in the final. King then traveled to the
Monterrey Open. In doubles, she reunited with Grönefeld and reached the final as the top seed, falling to second-seeded pair Benešová/Záhlavová. In singles, she lost in the quarterfinals to second seed Daniela Hantuchová. At the
Indian Wells Open, King lost in the second round to No. 2,
Caroline Wozniacki. She did not enter the doubles tournament. She fared better in the
Miami Open later that month. King partnered with
Julie Coin and reached the quarterfinals of the
doubles tournament, before losing to third seeds Petrova and
Samantha Stosur, who went on to become the runners-up. Her next Premier event was the
Charleston Open, where she reunited with Krajicek and reached the final, before falling to top seeds Huber and Petrova. In singles, she lost to Petrova in the second round. At the
Madrid Open, King paired with
Chuang Chia-jung for the first time for the doubles tournament. They defeated fourth seeds Huber and
Anabel Medina Garrigues, before falling in the quarterfinals to Pe'er and
Francesca Schiavone. In singles, King lost in the first round to
Karolina Šprem. She then entered the
Strasbourg International. In the doubles tournament, she partnered with
Alizé Cornet and won the title after an injury to
Lucie Hradecká forced top seeds Hradecká/Chuang to retire in the second round. King/Cornet defeated second seeds Rodionova/Kudryavtseva in the final for her tenth tour doubles title. In singles, King defeated second seed
Elena Vesnina in the first round and reached the semifinals, falling there to
Kristina Barrois. At the
French Open, she lost in the first round to Mattek-Sands. She entered the mixed-doubles tournament with
Christopher Kas, reaching the semifinals, before falling to Shvedova and
Julian Knowle. In women's doubles with Krajicek, she reached the second round losing to fourth-seeded Petrova and Stosur. At
Wimbledon, King won the
ladies' doubles title in straight sets with
Yaroslava Shvedova. They defeated Elena Vesnina and Vera Zvonareva in the final. At the
US Open, King and Shvedova won their second Grand Slam doubles title, defeating the second-seeded pair Huber/Petrova in a rain-delayed final. At the Stanford Classic, Vania lost to
Sorana Cîrstea.
2011 King and Shvedova made the finals of the US Open, losing to Liezel Huber and
Lisa Raymond. King made it to the finals of five other WTA tournaments in the course of the year, one in Monterrey with Grönefeld and in Rome, Cincinnati, Osaka, and Moscow with Shvedova. She and Shvedova won the events in Cincinnati in August and Moscow in October.
2012 King reached the third round of the
Australian Open at the start of the year, losing to
Ana Ivanovic. She had defeated
Kateryna Bondarenko in the first round. She reached the second round of the Carlsbad Open in July, losing to
Marion Bartoli. In doubles, she reached the final in Stanford with
Jarmila Gajdošová and in Carlsbad with Nadia Petrova, but lost to
Marina Erakovic and
Heather Watson in Stanford and to
Raquel Kops-Jones and
Abigail Spears in Carlsbad.
2013 , 2013 In singles action, King lost in the Guangzhou final to
Zhang Shuai. King lost in the second round of the French Open and in the first round of the other three Slans. In doubles that year, her best finish was a finals loss in Guangzhou.
2014 In doubles, King made the second round at the Australian Open partnering
Galina Voskoboeva. They lost to the Czech/Dutch pair of Hradecká and Krajicek. She partnered with
Barbora Strýcová in Florianópolis, and they made it to the semifinals before being defeated by Medina Garrigues and Shvedova. She was eliminated in the first round in Indian Wells, and the second round in Miami, but made it to the final in Bogotá, partnering
Chanelle Scheepers of South Africa. Partnering
Zheng Jie, she made a quarterfinal appearance in Madrid, losing to
Sara Errani and Roberta Vinci. Then followed a series of first-round losses, including Roland Garros and Wimbledon. She had some success in the late summer, making the quarterfinals in Washington, partnering
Taylor Townsend, and the third round at the US Open, partnering Lisa Raymond. In singles, she made the semifinals in Shenzhen, but had to concede a walkover. She made a first-round exit at the Australian Open at the hands of
Carla Suárez Navarro. At the
Pattaya Open, she was defeated by Elena Vesnina in the first round. A series of first-round defeats followed in Rio de Janeiro, Florianópolis, and Indian Wells. She made the second round in Miami and Charleston, but it was not until April in Bogotá that she found some form and made it to the semifinals. She went down in the first round in both Roland Garros and Wimbledon, but she did make the quarterfinals in Washington, D.C. At the
US Open, she defeated Francesca Schiavone in the first round, but lost to eventual champion Serena Williams in the second.
2015 King missed the first three majors of 2015 due to injury. She lost in the first round of singles and the second round of doubles there in Flushing. The highlight of her year came on hardcourts in Waco, where King and
Nicole Gibbs won in November, defeating
Julia Glushko and
Rebecca Peterson.
2017 King reunited with the doubles partner with whom she had had the most success, Yaroslava Shvedova. They made it to the semifinals in Sydney where they lost to
Sania Mirza and Barbora Strýcová. At the Australian Open, King and Shvedova advanced to the third round, where they lost to
Mirjana Lučić-Baroni and Andrea Petkovic. They were stopped in the second round of Indian Wells by the Japanese/Chinese pair of
Shuko Aoyama and
Yang Zhaoxuan. In Miami, they went on to the quarterfinals, where they again lost to Mirza and Strýcová. ==Performance timelines==