Roger Federer
Aljaz Bedene
Borna Coric
Alexander Zverev
Dominic Thiem
Mikhail Youzhny
Roberto Bautista Agut
Jan-Lennard Struff
Stefanos Tsitsipas
Lucas Pouille
Philipp Kohlschreiber
Marton Fucsovics
Florian Mayer
Richard Gasquet
Kei Nishikori
Matthias Bachinger
Karen Khachanov
Mischa Zverev
Robin Haase
Joao Sousa
Benoit Paire
Steve Johnson
Yuichi Sugita
Maximilian Marterer
Andreas Seppi
Matteo Berrettini
Matthew Ebden
Malek Jaziri
Nikoloz Basilashvili
Rudolf Molleker
Denis Kudla
Lukas Lacko