Eric Butorac and Jean-Julien Rojer were the defending champions but decided not to participate together.
Butorac plays alongside Bruno Soares, while Rojer partners up with Aisam-ul-Haq Qureshi.
Aisam-ul-Haq Qureshi and Jean-Julien Rojer won the title defeating Julian Knowle and David Marrero 7–5, 7–5 in the final.
Rohan Bopanna and Aisam-ul-Haq Qureshi were the defending champions but Bopanna decided not to participate.
Qureshi plays alongside Jean-Julien Rojer and won the title beating Treat Conrad Huey and Scott Lipsky in the final, 6–3, 6–4.
Michaël Llodra and Nenad Zimonjić were the defending champions but decided not to participate together.
Llodra was scheduled to play with Jérémy Chardy, but the pair withdrew before their first round match, while Zimonjić played alongside Daniel Nestor and successfully defended the title, defeating Treat Conrad Huey and Dominic Inglot 7–5, 6–7(4–7), [10–5] in the final.
Aisam-ul-Haq Qureshi and Jean-Julien Rojer were the defending champions, but lost in the first round to Kei Nishikori and Milos Raonic.
Santiago González and Scott Lipsky won the title, defeating Daniele Bracciali and Jonathan Erlich in the final, 6–2, 7–6(7–3).
Treat Conrad Huey and Dominic Inglot were the defending champions, but lost in the semifinals to Julien Benneteau and Nenad Zimonjić.
Benneteau and Zimonjić went on to win the title, defeating Mardy Fish and Radek Štěpánek in the final, 7–6(7–5), 7–5.
Alexander Peya and Bruno Soares were the defending champions, but chose not to participate this year.
Eric Butorac and Raven Klaasen won the title, defeating Pablo Cuevas and Horacio Zeballos in the final, 6–2, 6–4.
Aisam-ul-Haq Qureshi and Jean-Julien Rojer were the defending champions, but Qureshi chose not to participate this year. Rojer played alongside Horia Tecău, but lost in the first round to Grigor Dimitrov and Pierre-Hugues Herbert.
Eric Butorac and Raven Klaasen won the title, defeating Treat Huey and Jack Sock in the final, 6-4, 6-3.
Sam Groth and Chris Guccione were the defending champions, but lost in the quarterfinals to Wesley Koolhof and Matwé Middelkoop.
Édouard Roger-Vasselin and Radek Štěpánek won the title, defeating Mate Pavić and Michael Venus in the final, 7–5, 6–3.
Mate Pavić and Michael Venus were the defending champions, but Pavić chose to compete in Sydney instead. Venus played alongside Robert Lindstedt, but lost in the first round to Nicholas Monroe and Artem Sitak.
Purav Raja and Divij Sharan were the defending champions but chose not to defend their title.
Marcel Granollers and Marcin Matkowski were the defending champions, but Granollers chose to compete in Beijing instead. Matkowski played alongside Aisam-ul-Haq Qureshi, but lost in the first round to Santiago González and Julio Peralta.
Marcus Daniell and Aisam-ul-Haq Qureshi were the defending champions but only Qureshi chose to defend his title, partnering Divij Sharan. Qureshi lost in the quarterfinals to Alex Bolt and Lleyton Hewitt.
Oliver Marach and Mate Pavić were the defending champions, but chose not to defend their title.
Max Mirnyi and Philipp Oswald were the defending champions, but Mirnyi retired from professional tennis at the end of 2018 and Oswald chose not to participate this year.
Evan King and Hunter Reese were the defending champions but only Reese chose to defend his title, partnering André Göransson. Reese lost in the first round to Treat Huey and Fabrice Martin.
Nicolas Mahut and Édouard Roger-Vasselin were the defending champions, but lost in the final to Robert Lindstedt and Jan-Lennard Struff, 6–2, 6–7(1–7), [4–10].
Sander Gillé and Joran Vliegen were the defending champions but lost in the first round to Sander Arends and David Pel.
Nicolas Mahut and Vasek Pospisil were the defending champions, but they chose not to participate.
Santiago González and Aisam-ul-Haq Qureshi were the defending champions but chose not to defend their title.
Zdeněk Kolář and Jiří Lehečka were the defending champions but chose not to defend their title.
Jonathan Eysseric 
David Pel 
Aisam-ul-Haq Qureshi 
