Gael Monfils (FRA) [6]
Jiri Vesely (CZE)
Alexandr Dolgopolov (UKR)
Borna Coric (CRO)
Qualifier
Donald Young (USA)
Nikoloz Basilashvili (GEO)
Philipp Kohlschreiber (GER) [32]
Alexander Zverev (GER) [24]
Robin Haase (NED)
Qualifier
Mikhail Kukushkin (KAZ)
Mikhail Youzhny (RUS)
Marcos Baghdatis (CYP)
Florian Mayer (GER)
Rafael Nadal (ESP) [9]
Roberto Bautista Agut (ESP) [13]
Guido Pella (ARG)
Yoshihito Nishioka (JPN)
Qualifier
Daniil Medvedev (RUS)
Qualifier
Omar Jasika (AUS)
David Ferrer (ESP) [21]
Gilles Simon (FRA) [25]
Michael Mmoh (USA)
Jared Donaldson (USA)
Rogerio Dutra Silva (BRA)
Gilles Muller (LUX)
Taylor Fritz (USA)
Dustin Brown (GER)
Milos Raonic (CAN) [3]