Izak van der Merwe and Raven Klaasen were the defending champions, but not to participate.
Ivo Klec and Andreas Siljeström were the defending champions but chose not to compete.
Riccardo Ghedin and Claudio Grassi were the defending champions, but not to compete.
Andreas Beck and Dominik Meffert were the defending champions. but decided not to participate.
Oleksandr Nedovyesov and Ivan Sergeyev were the defending champions, but decided not to compete.
Chen Ti and Guillermo Olaso were the defending champions, but Olaso decided not to compete. Chen Ti played alongside Sriram Balaji and lost in the quarterfinals to Gong Maoxin and Peng Hsien-yin.
Marin Draganja and Mate Pavić were the defending champions but chose not to compete.
Pierre-Hugues Herbert and Konstantin Kravchuk won the title, beating David Guez and Martin Vaisse 6–1, 7–6(7–3)
Jamie Delgado and Jordan Kerr were the defending champions. Delgado chose not to compete this year, while Kerr partnered Fabrice Martin but they lost in the final to Colin Fleming and Jonathan Marray, 4–6, 6–2, [8–10].
Austin Krajicek and Tennys Sandgren were the current champions, but did not compete this year.
Henri Kontinen and Jarkko Nieminen were the defending champions, and they successfully defended their title, beating Jonathan Marray and Philipp Petzschner in the final, 7–6(7–2), 6–4.
Jean-Julien Rojer and Horia Tecău were the defending champions, but chose not to participate this year.
Marin Draganja and Henri Kontinen won the title, defeating Fabrice Martin and Purav Raja in the final, 6–4, 6–4.
Karol Beck and Michal Mertiňák were the defending champions, but they did not participate this year.
Sergey Betov and Alexander Bury were the defending champions, but decided not to compete together. Bury played alongside Teymuraz Gabashvili, but lost to Yaraslav Shyla and Andrei Vasilevski in the first round. Betov competed with Mikhail Elgin and reached the final, but lost to Yuki Bhambri and Adrián Menéndez-Maceiras, 7–5, 3–6, [8–10].
Sergey Betov and Alexander Bury were the defending champions, but chose not to participate together. Bury played alongside Anton Zaitcev, but lost to Aldin Šetkić and Boy Westerhof in the quarterfinals.
Sergey Betov and Alexander Bury were the defending champions, but Bury decided not to participate. Betov teamed up with Michail Elgin and successfully defended the title, beating Denys Molchanov and Franko Škugor in the final, 6–3, 7–5.
Sergey Betov and Alexander Bury were the defending champions, but Betov did not participate this year. Bury partnered with Andreas Siljeström, but lost the final against Fabrice Martin and Purav Raja, 6–7(5–7), 6–4, [16–18].
Lukáš Lacko and Ante Pavić were the defending champions, but chose not defend their title.
This was the first edition of the tournament.
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.
Sergey Betov 
Nicolás Barrientos 
Stanislav Vovk 
