Oscar Jose Gutierrez @ Challenger Hamburg

Illya Marchenko Jelle Sels Botic Van De Zandschulp Stefano Napolitano Cedrik-Marcel Stebe Dennis Novak Billy Harris Cem Ilkel Sebastian Ofner Robin Haase Taro Daniel Evgeny Donskoy Kenny de Schepper Elias Ymer Jeremy Jahn Kyle Edmund Roman Safiullin Marc-Andrea Huesler Frederico Ferreira Silva Yasutaka Uchiyama Yusuke Takahashi Gian Marco Moroni Michael Geerts Sergiy Stakhovsky Andrea Pellegrino Norbert Gombos Viktor Troicki Maximilian Marterer Ricardas Berankis Gianluca Mager Steve Darcis Antoine Bellier Alessandro Giannessi Radu Albot Brayden Schnur Filip Peliwo Hugo Grenier Alex Molcan Lukas Lacko Nino Serdarusic Kelsey Stevenson Vit Kopriva Prajnesh Gunneswaran Florian Broska Alexey Vatutin Oscar Jose Gutierrez Antoine Escoffier Mischa Zverev Dustin Brown Christoph Negritu