Cara Black and Liezel Huber were the defending champions, and won in the final, 6–3, 6–3, over Maria Kirilenko and Agnieszka Radwańska.
Elena Likhovtseva and Anastasia Myskina were the defending champions, but Myskina chose not to compete that year. Likhovtseva partnered with Elena Vesnina.
Serena and Venus Williams were the defending champions but lost in the quarterfinals to Elena Vesnina and Vera Zvonareva.
Shahar Pe'er was the defending champion, but chose not to participate that year.
Alla Kudryavtseva won in the final, 6–4, 6–4, against Elena Vesnina.
Serena Williams and Venus Williams were the defending champions, but both withdrew from the tournament with a pulmonary embolism and a hip injury, respectively.
In the final, Andrea Hlaváčková and Lucie Hradecká defeated 7th seeded Sania Mirza and Elena Vesnina in straight sets, 6–4, 6–3.
Andrea Hlaváčková and Lucie Hradecká were the defending champions, but lost in the semifinals to Maria Kirilenko and Nadia Petrova.
Sara Errani and Roberta Vinci won the tournament by defeating Maria Kirilenko and Nadia Petrova 4–6, 6–4, 6–2 in the final.
Marion Bartoli was the defending champion, but lost in the semifinal against Tamira Paszek, who won the title by beating Angelique Kerber 5–7, 6–3, 7–5 in the final.
Kaia Kanepi was the defending champion, but she lost in the semifinals to Carla Suárez Navarro.
Anastasia Pavlyuchenkova won the title, defeating Suárez Navarro in the final, 7–5, 6–2.
Elena Vesnina was the defending champion, but she retired in the second round against Estrella Cabeza Candela.
Garbiñe Muguruza won her first WTA singles title, defeating Klára Zakopalová in the final, 6–4, 6–0.
Serena Williams was the two-time defending champion, but withdrew before her third round match because of a right elbow injury.
Martina Hingis and Flavia Pennetta were the defending champions, but chose not to participate this year.
Timea Babos and Kristina Mladenovic were the defending champions, but chose not to participate together. Babos played alongside Yaroslava Shvedova, but lost in the quarterfinals to Irina-Camelia Begu and Monica Niculescu. Mladenovic teamed up with Caroline Garcia, but lost in the quarterfinals to Andrea Hlaváčková and Lucie Hradecká.
Martina Hingis and Sania Mirza won the title, defeating Ekaterina Makarova and Elena Vesnina in the final, 6–1, 6–7(5–7), [10–3].
Agnieszka Radwańska was the defending champion, but withdrew before her quarterfinal match with a right thigh injury.
Martina Hingis and Sania Mirza were the defending champions, but chose not to participate together. Mirza played alongside Yaroslava Shvedova, but lost in the semifinals to Chan Yung-jan and Hingis.
Caroline Garcia was the defending champion, but lost in the semifinals to Daria Gavrilova.
Serena and Venus Williams were the defending champions, but did not participate this year due to Serena's pregnancy.
Sania Mirza and Barbora Strýcová were the defending champions, but chose not to participate together. Mirza played alongside Peng Shuai, but lost in the semifinals to Hsieh Su-wei and Monica Niculescu. Strýcová teamed up with Lucie Šafářová, but lost in the semifinals to Chan Yung-jan and Martina Hingis.
Petra Kvitová was the defending champion, but lost in the first round to Peng Shuai.
Bethanie Mattek-Sands and Lucie Šafářová were the defending champions, but Mattek-Sands could not participate this year due to injury. Šafářová played alongside Barbora Strýcová, but lost in the quarterfinals to Hsieh Su-wei and Peng Shuai.
Latisha Chan and Martina Hingis were the defending champions, but Hingis retired from professional tennis at the end of 2017. Chan played alongside her sister Chan Hao-ching, but lost in the second round to Hsieh Su-wei and Barbora Strýcová.
