Roger Federer
Jan-Lennard Struff
Kei Nishikori
Lucas Pouille
Dominic Thiem
Joao Sousa
Marcos Baghdatis
Tomas Berdych
David Goffin
Borna Coric
Andreas Seppi
David Ferrer
Alexander Zverev
Viktor Troicki
Philipp Kohlschreiber
Marcel Granollers
Ivo Karlovic
Andrey Kuznetsov
Dustin Brown
Albert Ramos-Vinolas
Teymuraz Gabashvili
Paolo Lorenzi
Malek Jaziri
Ricardas Berankis
Benjamin Becker
Ernests Gulbis
Sergiy Stakhovsky
Denis Kudla
Yuichi Sugita
Taylor Fritz
Florian Mayer
Brian Baker