Kevin Krawietz and Albano Olivetti were the defending champions but chose not to defend their title.
Julian Knowle and Igor Zelenay were the defending champions but only Zelenay chose to defend his title, partnering Denys Molchanov. Zelenay lost in the semifinals to Ariel Behar and Máximo González.
Steven de Waard and Ben McLachlan were the defending champions but chose not to defend their title.
Tomasz Bednarek and David Pel were the defending champions but chose not to defend their title.
Carlos Taberner and Pol Toledo Bagué were the defending champions but chose not to defend their title.
Sander Arends and Antonio Šančić were the defending champions but chose not to defend their title.
Marin and Tomislav Draganja were the defending champions but only Tomislav chose to defend his title, partnering Alessandro Giannessi. Tomislav Draganja lost in the quarterfinals to Andrej Martin and Hans Podlipnik Castillo.
Scott Clayton and Jonny O'Mara were the defending champions but only Clayton chose to defend his title, partnering Adil Shamasdin. Clayton lost in the semifinals to Laurynas Grigelis and Zdeněk Kolář.
Julian Ocleppo and Andrea Vavassori were the defending champions but lost in the first round to Jonathan Eysseric and Andrei Vasilevski.
Attila Balázs and Gonçalo Oliveira were the defending champions but chose not to defend their title.
This was the first edition of the tournament.
Mateusz Kowalczyk and Szymon Walków were the defending champions but only Walków chose to defend his title, partnering Karol Drzewiecki. Walków lost in the first round to Javier Barranco Cosano and Raúl Brancaccio.
Julian Ocleppo and Andrea Vavassori were the defending champions but chose to defend their title with different partners. Ocleppo partnered Andrea Pellegrino but lost in the first round to David Marrero and Roberto Maytín. Vavassori partnered Andrei Vasilevski but lost in the final to Tomislav Brkić and Ante Pavić.
Julian Ocleppo and Andrea Vavassori were the defending champions but only Vavassori chose to defend his title, partnering Andrea Pellegrino. Vavassori lost in the semifinals to Ivan and Matej Sabanov.
Andrés Artuñedo and David Pérez Sanz were the defending champions but only Artuñedo chose to defend his title, partnering Sergio Martos Gornés. Artuñedo lost in the first round to Andreas Siljeström and Andrea Vavassori.
Laurynas Grigelis and Zdeněk Kolář were the defending champions but only Kolář chose to defend his title, partnering Julian Ocleppo. Kolář successfully defended his title after defeating Luca Margaroli and Andrea Vavassori 6–4, 6–3 in the final.
Andre Begemann and Daniel Masur were the defending champions but chose to defend their title with different partners. Begemann partnered Albano Olivetti but lost in the semifinals to Lloyd Glasspool and Harri Heliövaara. Masur partnered Julian Lenz but lost in the semifinals to Zdeněk Kolář and Andrea Vavassori.
Denys Molchanov and Igor Zelenay were the defending champions but chose not to defend their title.
Dustin Brown and Antoine Hoang were the defending champions but only Brown chose to defend his title, partnering Andrea Vavassori. Brown lost in the quarterfinals to Ruben Bemelmans and Daniel Masur.
Sadio Doumbia and Fabien Reboul were the defending champions but chose not to defend their title.
Karol Drzewiecki 
Marc-Andrea Hüsler 
David Pel 
