2 Nadal, Rafael (ESP)
4 Thiem, Dominic (AUT)
5 Zverev, Alexander (GER)
6 Tsitsipas, Stefanos (GRE)
7 Nishikori, Kei (JPN)
9 Khachanov, Karen (RUS)
10 Fognini, Fabio (ITA)
12 Isner, John (USA)
13 Medvedev, Daniil (RUS)
14 Coric, Borna (CRO)
15 Monfils, Gael (FRA)
16 Basilashvili, Nikoloz (GEO)
17 Raonic, Milos (CAN)
18 Cilic, Marin (CRO)
19 Wawrinka, Stan (SUI)
20 Berrettini, Matteo (ITA)
21 Auger-Aliassime, Felix (CAN)
22 Bautista Agut, Roberto (ESP)
23 Goffin, David (BEL)
24 Schwartzman, Diego (ARG)
25 Simon, Gilles (FRA)
26 Pella, Guido (ARG)
27 Shapovalov, Denis (CAN)
28 Pouille, Lucas (FRA)
29 De Minaur, Alex (AUS)
30 Djere, Laslo (SRB)
31 Edmund, Kyle (GBR)
32 Paire, Benoit (FRA)
33 Lajovic, Dusan (SRB)
34 Struff, Jan-Lennard (GER)
35 Garin, Cristian (CHI)
37 Mannarino, Adrian (FRA)
38 Herbert, Pierre-Hugues (FRA)
40 Cecchinato, Marco (ITA)
41 Albot, Radu (MDA)
42 Fritz, Taylor (USA)
43 Kyrgios, Nick (AUS)
Alternates
45 Thompson, Jordan (AUS)
46 Gasquet, Richard (FRA)
47 Kukushkin, Mikhail (KAZ)
48 Dimitrov, Grigor (BUL)
49 Norrie, Cameron (GBR)
50 Fucsovics, Marton (HUN)
52 Hurkacz, Hubert (POL)
53 Lopez, Feliciano (ESP)
54 Klizan, Martin (SVK)
WCs:
Brayden Schnur
Vasek Pospisil
Peter Polansky
Tenant du titre: Rafael Nadal def. Stefanos Tsitsipas, 6–2, 7–6(7–4)