Philipp Kohlschreiber
Fabio Fognini
Gilles Muller
Alexandr Dolgopolov
Andrey Kuznetsov
Martin Klizan
Marcel Granollers
Santiago Giraldo
Nicolas Mahut
Thomaz Bellucci
Paolo Lorenzi
Florian Mayer
Mischa Zverev
Nicolas Almagro
Matthew Barton
Kyle Edmund
Alex de Minaur
Benoit Paire
Daniel Evans
Thiago Monteiro
Jordan Thompson
Nikoloz Basilashvili
Gastao Elias
Christopher O'Connell