Albot, Radu (MDA)
Felix Auger-Aliassime (CAN)
Bai, Yan (CHN) WC
Berankis, Ricardas (LTU)
Bublik, Alexander (KAZ)
Carreno Busta, Pablo (ESP)
Chung, Hyeon (KOR) WC
Dimitrov, Grigor (BUL)
Edmund, Kyle (GBR)
Evans, Daniel (GBR)
Fritz, Taylor (USA)
Fucsovics, Marton (HUN)
Garin, Cristian (CHI)
Gerasimov, Egor (BLR)
Isner, John (USA)
Jung, Jason (TPE) Q
Klahn, Bradley (USA) Q
Lajovic, Dusan (SRB)
Li, Zhe (CHN) WC
Londero, Juan Ignacio (ARG)
Majchrzak, Kamil (POL) Q
Paire, Benoit (FRA)
Popyrin, Alexei (AUS) Q
Pospisil, Vasek (CAN)
Shapovalov, Denis (CAN)
Sousa, Joao (POR)
Thompson, Jordan (AUS)
Verdasco, Fernando (ESP)