| Aidan McHugh
Emily Webley-Smith | | | Bye |
| Rohan Bopanna
Sania Mirza | def. | Ramkumar Ramanathan
Ankita Raina | 6-2 7-6 |
2nd Jul - 16h25 | Gonzalo Escobar
Vera Zvonareva | def. | Jonathan Erlich
Lucie Hradecka | 6-7 7-6 6-4 |
| Jean-Julien Rojer
Andreja Klepac | | | Bye |
| Fabrice Martin
Alexa Guarachi | | | Bye |
3rd Jul - 19h35 | Arthur Fery
Tara Moore | def. | Ken Skupski
Jessica Pegula | 6-1 5-7 7-5 |
2nd Jul - 15h30 | Luke Bambridge
Asia Muhammad | def. | Lloyd Glasspool
Jodie Anna Burrage | w.o. |
| Neal Skupski
Desirae Krawczyk | | | Bye |
| Edouard Roger-Vasselin
Nicole Melichar-Martinez | | | Bye |
2nd Jul - 18h05 | Nick Kyrgios
Venus Williams | def. | Austin Krajicek
Sabrina Santamaria | 6-3 3-6 7-5 |
2nd Jul - 18h30 | Andrei Vasilevski
Arina Rodionova | def. | John-Patrick Smith
Caty McNally | 6-2 6-3 |
| Marcus Daniell
Sharon Fichman | | | Bye |
| John Peers
Shuai Zhang | | | Bye |
2nd Jul - 19h20 | Roman Jebavý
Markéta Vondroušová | def. | Andre Begemann
Vivian Heisen | 6-4 3-6 6-3 |
3rd Jul - 19h45 | Aisam-Ul-Haq Qureshi
Nadiia Kichenok | def. | Alexander Bublik
Anastasia Pavlyuchenkova | w.o. |
| Ivan Dodig
Latisha Chan | | | Bye |
| Michael Venus
Hao-Ching Chan | | | Bye |
2nd Jul - 17h15 | Jérémy Chardy
Naomi Broady | def. | Ryan Peniston
Eden Silva | 6-4 6-2 |
2nd Jul - 17h55 | Divij Sharan
Samantha Murray Sharan | def. | Ariel Behar
Galina Voskoboeva | 6-3 5-7 6-4 |
| Raven Klaasen
Darija Jurak | | | Bye |
| Ben McLachlan
Ena Shibahara | | | Bye |
2nd Jul - 17h40 | Oliver Marach
Lyudmyla Kichenok | def. | Santiago González
Giuliana Olmos | 7-5 7-5 |
2nd Jul - 19h05 | Joe Salisbury
Harriet Dart | def. | Henri Kontinen
Heather Watson | 6-1 7-6 |
| Wesley Koolhof
Demi Schuurs | | | Bye |
| Rajeev Ram
Bethanie Mattek-Sands | | | Bye |
2nd Jul - 19h30 | Nicholas Monroe
Renata Voracova | def. | Jonny O'Mara
Sarah Beth Grey | 6-4 6-3 |
2nd Jul - 19h15 | Max Purcell
Marta Kostyuk | def. | Marc López
Marie Bouzkova | 6-3 6-4 |
| Kevin Krawietz
Kveta Peschke-Peschkeová | | | Bye |
| Sander Gillé
Hayley Carter | | | Bye |
2nd Jul - 16h05 | Marcelo Demoliner
Luisa Stefani | def. | David Pel
Rosalie Van der Hoek | 6-3 6-2 |
2nd Jul - 18h55 | Matthew Ebden
Samantha Stosur | def. | Matwe Middelkoop
Kiki Bertens | 7-6 5-7 6-3 |
| Mate Pavic
Gabriela Dabrowski | | | Bye |