Martin Fischer and Philipp Oswald were the defending champions, but Fischer chose not to participate this year.
As a result, Oswald played alongside Nikolaus Moser. They reached the quarterfinals, but lost to Andrey Kumantsov and Michael Ryderstedt.
Dominik Meffert and Simon Stadler won the title after defeating Andre Begemann and James Lemke 7–5, 2–6, [10–7].
Rik de Voest and Adil Shamasdin won the final 6–3, 7–6(11–9) against Treat Conrad Huey and Izak van der Merwe.
Philipp Oswald and Mate Pavić were the defending champions, but Oswald chose not to compete. Mate Pavić partnered with Marin Draganja, but they lost in the semifinals.
Philipp Oswald and Andreas Siljeström were the defending champions, but Oswald did not participate that year, and Siljeström played alongside Roman Jebavý, but they lost in the final to Patrick Grigoriu and Costin Pavăl, 6–7(4–7), 7–6(7–4), [5–10].
David Marrero and Fernando Verdasco won the last edition of the tournament held in 2013, but chose not to participate this year.
Treat Huey and Henri Kontinen won the title, defeating Julian Knowle and Alexander Peya in the final, 7–5, 6–3.
Vasek Pospisil and Nenad Zimonjić were the defending champions, but Pospisil decided not to participate. Zimonjić plays alongside Marcin Matkowski but lost to Alexander Peya and Bruno Soares in the quarterfinals.
Wesley Koolhof and Matwé Middelkoop were the defending champions but chose not to defend their title.
Sergey Betov and Mikhail Elgin were the defending champions but only Betov returned, partnering Tomasz Bednarek. Betov lost in the quarterfinals to Mateusz Kowalczyk and Antonio Šančić.
Paolo Lorenzi and Matteo Viola were the defending champions but chose not to participate.
This was the first edition of the tournament.
Simone Bolelli and Andreas Seppi were the defending champions, but Bolelli chose to compete in São Paulo instead. Seppi played alongside Jeevan Nedunchezhiyan in the qualifying tournament, but lost in the qualifying competition to James Cerretani and Philipp Oswald.
James Cerretani and Philipp Oswald were the defending champions but only Cerretani chose to defend his title, partnering Max Schnur. Cerretani lost in the first round to Sander Arends and Matwé Middelkoop.
Treat Huey and Frederik Nielsen were the defending champions but chose to defend their title with different partners. Huey partnered Robert Lindstedt but lost in the final to James Cerretani and Neal Skupski. Nielsen partnered Andreas Siljeström but lost in the semifinals to Huey and Lindstedt.
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.
Juan Sebastián Cabal and Robert Farah were the defending champions but Farah chose not to participate this year. Cabal played alongside Denys Molchanov, but lost in the semifinals to Max Mirnyi and Philipp Oswald.
James Cerretani and Antal van der Duim were the defending champions but only Cerretani chose to defend his title, partnering Nicholas Monroe. Cerretani lost in the first round to Ruben Bemelmans and Jonathan Eysseric.
Ben McLachlan and Yasutaka Uchiyama were the defending champions but chose not to participate together. McLachlan played alongside Jan-Lennard Struff and successfully defended the title, defeating Raven Klaasen and Michael Venus in the final, 6–4, 7–5. Uchiyama teamed up with Joe Salisbury, but lost in the semifinals to Klaasen and Venus.
Robin Haase and Matwé Middelkoop were the defending champions, but chose to compete in Doha instead.
Marcelo Arévalo and Miguel Ángel Reyes-Varela were the defending champions but chose not to defend their title.
Philipp Oswald and Filip Polášek were the defending champions but chose not to defend their title.
Nicolás Jarry 
Austin Krajicek 
