| Men’s Single – Round 1: |
| Medvedev (1-Russia) – Kozlov (USA) 6: 2, 6: 4, 6: 0 |
| Ruud (5-Nor.) – Edmund (British) 6: 3, 7: 5, 6: 2 |
| Berrettini (13-It.) – Jarry (Chile) 6: 2, 6: 3, 6: 3 |
| Wolf (USA) – Bautista (16-Sp.) 6: 4, 6: 4, 6: 4 |
| A. Murray (Brit.) Defeated F. Cerundolo (24-Arg.) 7: 5, 6: 3, 6: 3 |
| Paul (29-USA) – Zapata (SP) 4: 6, 6: 3, 2: 6, 6: 0, 7: 5 |
| Fuscovics (Germany) – Cressy (30-USA) 6: 7 (4: 7), 7: 5, 5: 1 scratch |
| Wu I-ping (China) – Basilashvili (31-Georgia) 6: 3, 6: 4, 6: 0 |
| Korda (USA) – Bagnis (Arg.) 5: 7, 7: 6 (7: 3), 7: 5, 6: 1 |
| Davidovich (Sp.) – Nishioka (Japan) 6: 3, 7: 5, 6: 3 |
| Van Rijthoven (Netherlands) – Zhang Chenchen (China) 3: 6, 6: 7 (4: 7), 7: 6 (11: 9), 6: 1, 6: 4 |
| Nava (USA) – Millman (Ausr.) 7: 6 (9: 7), 4: 6, 7: 6 (7: 4), 1: 6, 6: 1 |
| Tabilo (Chile) – Majchrzak (Pol.) 6: 1, 6: 4, 6: 7 (3: 7), 6: 1 |
| Rinderknech – Halys (country Fr.) 4: 6, 7: 6 (7: 4), 6: 3, 6: 2 |
| Moutet (Fr.) – Wawrinka (Switzerland) 6: 4, 7: 6 (9: 7), scratch |
| Grenier (Fr.) – Etcheverry (Arg.) 4: 6, 6: 2, 6: 3, 6: 4 |
| De Minaur (18-Aust.) – Krajinovic (Serbian) 7: 5, 6: 2, 6: 3 |
| Khačanov (27-Russia) – Kudla (USA) 3: 6, 6: 1, 6: 2, 6: 2 |
| Borges (Portugal) – Shelton (USA) 7: 6 (8: 6), 3: 6, 7: 6 (7: 5), 6: 7 (8:10), 6: 3 |
| Auger-Aliassime (6-Kan.) – Ritschard (Švýc.) 6: 3, 6: 4, 3: 6, 6: 3 |
| Carreňo-Busta (12-Sp.) – Thiem (Austria) 7: 5, 6: 1, 5: 7, 6: 3 |
| Monteiro (Brazil) – Molčan (SR) 6: 4, 4: 6, 6: 4, 6: 1 |
| Bonzi – Humbert (or Fr.) 7: 6 (7: 1), 6: 1, 5: 7, 3: 6, 6: 2 |
| Kyrgios (23-Austr.) – Kokkinakis (Austr.) 6: 3, 6: 4, 7: 6 (7: 4) |
| Galán (Col.) – Tsitsipas (4-Greece) 6: 0, 6: 1, 3: 6, 7: 5 |
| Holt (USA) – Fritz (10-USA) 6: 7 (3: 7), 7: 6 (7: 1), 6: 3, 6: 4 |
| Boublik (Kaz.) – Gaston (Fr.) 6: 4, 6: 4, 6: 4 |
| Thompson (Austr.) – Sonego (It.) 2: 6, 1: 6, 6: 2, 6: 4, 6: 4 |
| Draper (Brit.) – Rusuvuori (Fin.) 6: 4, 6: 3, 6: 3 |
| Cachín (Arg.) – Bedene (Slovin.) 6: 4, 6: 3, 5: 7, 1: 6, 7: 6 (10: 6) |
| Women’s singles – 1st round: |
| Sakkari (3-Greek) – Maria (German) 6: 4, 3: 6, 6: 0 |
| Garcia (17-Fr.) – Rachimova (Rus.) 6: 2, 6: 4 |
| Kuděrmětová (18-Russia) – Vekicová (Croatia) 7: 5, 6: 3 |
| Riskeová-Amritrajová (29-USA) – Yuová (USA) 6: 2, 6: 4 |
| Kalinska (Russia) – Peterson (Sweden) 6: 4, 6: 3 |
| Andreescuová (Can.) – Tanová (Fr.) 6: 0, 3: 6, 6: 1 |
| Osoriová (Col.) – Liová (USA) 1: 6, 6: 3, 6: 1 |
| Snigurova (Ukraine) – Halepova (7-Romania) 6: 2, 0: 6, 6: 4 |
| Gauffová (12-USA) – Jeanjeanová (Fr.) 6: 2, 6: 3 |
| Haddadová Maiaová (15-Brazil) – Konjuhová (Croatia) 6: 0, 6: 0 |
| Gálfiová (Germany) – Párrizasová (Sp.) 6: 4, 6: 3 |
| Zanevská (Belg.) – Vandewegheová (USA) 6: 1, 7: 5 |
| Džábirová (5-Tun.) – Brengleová (USA) 7: 5, 6: 2 |
| George (It.) – Bondárová (Germany) 4: 6, 6: 3, 6: 1 |
| Mandliková (USA) – Zidanšeková (Slovenia) 5: 7, 7: 6 (7: 3), 6: 4 |
| Dartova (Great Britain) – Kasatkinova (10-Russia) 7: 6 (10: 8), 1: 6, 6: 3 |
| Keysová (20-USA) – Jastremska (Ukraine) 7: 6 (7: 3), 6: 3 |
| Rodinová (Rus.) – Trevisanová (27-It.) 7: 5, 6: 1 |
| Marinová (Can.) – Frechová (Poland) 6: 2, 6: 3 |
| Zhang Shuai (China) – Teichmann (30-Switzerland) 6: 4, 6: 2 |
| Wang Si-ju (China) – Parade (Fr.) 5: 7, 6: 3, 6: 3 |
| Fernandez (14-Can.) – Dodin (Fr.) 6: 3, 6: 4 |
| Kontaveitova (2-East.) – Cristiano (Romania) 6: 3, 6: 0 |
| Rogers (31-USA) – Russian (Netherlands) 3: 6, 6: 3, 6: 4 |
| Ruse (Romania) – Saville (Austria) 3: 6, 6: 2, 6: 4 |
| Schmiedlová (SR) – Podoroská (Arg.) 6: 3, 6: 2 |
| S. Williamsová (USA) – Koviničová (Č. Hora) 6: 3, 6: 3 |
| Kruničová (serb.) – Avanesjanová (Rus.) 6: 4, 6: 4 |
| Kužmová (SR) – Sorribesová (SP) 6: 3, 6: 4 |
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