Chuang Chia-jung and Darija Jurak were the defending champions, but chose not to participate together.
 Chuang played alongside Zheng Saisai, but lost in the first round to Gabriela Dabrowski and Jeļena Ostapenko.
 Jurak teamed up with Anastasia Rodionova, but lost in the second round to Dabrowski and Ostapenko.
Gabriela Dabrowski (Polish: "Dąbrowska" ; born April 1, 1992) is a Canadian professional tennis player.
 She reached her highest WTA singles ranking of 164 on November 3, 2014 and her highest doubles ranking of 18 on September 11, 2017.
 She won the 2017 French Open mixed doubles title with Rohan Bopanna, becoming the first Canadian woman to win a senior Grand Slam title.
Shuko Aoyama and Gabriela Dabrowski were the defending champions, but Dabrowski chose to participate in Stanford instead.
 Aoyama played alongside Eri Hozumi, but lost in the quarterfinals to Lara Arruabarrena and Andreja Klepač who eventually lost in the final to Belinda Bencic and Kristina Mladenovic with the score 7–5, 7–6.
Gabriela Dabrowski and María José Martínez Sánchez were the defending champions, but Dabrowski chose to compete in Birmingham instead.
 Martínez Sánchez played alongside Andreja Klepač, but lost in the quarterfinals to Jelena Janković and Anastasija Sevastova.
Gabriela Dabrowski and Alicja Rosolska were the defending champions, but Dabrowski chose not to participate this year.
 Rosolska played alongside Anastasia Rodionova, but lost in the first round to Petra Martić and Maria Sanchez.
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Owen Keir Davidson (born 4 October 1943) is a former professional tennis player of the 1960s and 1970s.
Gabriela Dabrowski and Alla Kudryavtseva were the defending champions, having won the event in 2012.
 Kudryavtseva decided not to participate and Dabrowski partnered with Allie Will but lost in the quarterfinals.
Rohan Bopanna (born 4 March 1980) is an Indian professional tennis player.
 His singles career high ranking was World No. 213 in 2007 and his career high ranking in doubles was World No. 3 on 22 July 2013.
 Recently, most of his appearances in professional tournaments have been in doubles matches.
 He is a member of the Indian Davis Cup team since 2002.
 In 2010, he finished as a runner-up in doubles at the US Open, partnering with Aisam-ul-Haq Qureshi.
 He won the 2017 French Open - Mixed Doubles title with Gabriela Dabrowski of Canada becoming the fourth Indian player to win a Grand Slam title.
Gabriela Dabrowski and Sharon Fichman were the defending champions, but both competed with different partners.
 Dabrowski competed with Marie-Ève Pelletier, while Fichman competed with Sun Shengnan and both faced each other in the semifinals with Dabrowski and Pelletier winning.
Gabriela Dabrowski and Marie-Ève Pelletier were the defending champions.
 Pelletier chose not to participate, so Dabrowski partnered with Alla Kudryavtseva and won the title 6–2, 7–6 over Eugenie Bouchard and Jessica Pegula.

Question: Which player played tennis earlier in time, Owen Davidson or Gabriela Dabrowski?
Answer: Owen Keir Davidson