| | | | |
|  Norway |  Argentina | |
|
|
RANK 506 | Nicolai Budkov Kjaer | 5-7 6-2 6-7(5) | Tomas Martin Etcheverry | RANK 42 |
RANK 5 | Casper Ruud | 6-3 6-3 | Mariano Navone | RANK 49 |
| Viktor Durasovic / Casper Ruud | 2-6 5-7 | Andres Molteni / Horacio Zeballos | |
RANK 5 | Casper Ruud | 6-3 6-3 | Tomas Martin Etcheverry | RANK 42 |
RANK 506 | Nicolai Budkov Kjaer | 6-4 3-6 4-6 | Mariano Navone | RANK 49 |
| | | | |
| | | | |
|  Sweden |  Australia | |
|
|
RANK | Mikael Ymer | 5-7 1-6 | Alex De Minaur | RANK 8 |
RANK 484 | Leo Borg | 4-6 4-6 | Aleksandar Vukic | RANK 66 |
| Filip Bergevi / Andre Goransson | 7-6(7) 3-6 2-6 | Matthew Ebden / John Peers | |
RANK 484 | Leo Borg | 7-5 6-4 | John Peers | RANK |
RANK | Mikael Ymer | NOT PLAYED | Aleksandar Vukic | RANK 66 |
| | | | |
| | | | |
|  Belgium |  Chile | |
|
|
RANK 60 | Zizou Bergs | 6-4 6-3 | Marcelo Tomas Barrios Vera | RANK 137 |
RANK 146 | Alexander Blockx | 6-7(6) 1-6 | Cristian Garin | RANK 133 |
| Sander Gille / Joran Vliegen | 6-3 3-6 6-3 | Marcelo Tomas Barrios Vera / Nicolas Jarry | |
RANK 60 | Zizou Bergs | 6-3 4-6 7-5 | Cristian Garin | RANK 133 |
RANK 146 | Alexander Blockx | NOT PLAYED | Marcelo Tomas Barrios Vera | RANK 137 |
| | | | |
| | | | |
|  Canada |  Hungary | |
|
|
RANK 176 | Alexis Galarneau | 3-6 6-3 3-6 | Fabian Marozsan | RANK 58 |
RANK 85 | Gabriel Diallo | 6-3 2-6 2-6 | Marton Fucsovics | RANK 96 |
| Liam Draxl / Vasek Pospisil | 7-6(2) 6-4 | Peter Fajta / Mate Valkusz | |
RANK 85 | Gabriel Diallo | 6-1 6-3 | Fabian Marozsan | RANK 58 |
RANK 176 | Alexis Galarneau | 6-7(8) 4-6 | Marton Fucsovics | RANK 96 |
| | | | |
| | | | |
|  Austria |  Finland | |
|
|
RANK 219 | Lukas Neumayer | 6-4 6-7(4) 6-3 | Otto Virtanen | RANK 97 |
RANK 155 | Jurij Rodionov | 2-6 6-3 6-3 | Eero Vasa | RANK 568 |
| Alexander Erler / Lucas Miedler | 4-6 7-6(7) 7-6(6) | Patrick Kaukovalta / Patrik Niklas-Salminen | |
RANK 314 | Filip Misolic | 6-4 6-0 | Eero Vasa | RANK 568 |
RANK 219 | Lukas Neumayer | NOT PLAYED | Eero Vasa | RANK 568 |
| | | | |
| | | | |
|  Israel |  Germany | |
|
|
RANK 531 | Yshai Oliel | 2-6 7-5 4-6 | Maximilian Marterer | RANK 198 |
RANK 556 | Daniel Cukierman | 4-6 4-6 | Yannick Hanfmann | RANK 92 |
| Daniel Cukierman / Amit Vales | 0-6 3-6 | Kevin Krawietz / Tim Puetz | |
RANK 1226 | Ofek Shimanov | 6-7(2) 6-3 10-8 | Daniel Masur | RANK 265 |
RANK 556 | Daniel Cukierman | NOT PLAYED | Maximilian Marterer | RANK 198 |
| | | | |
| | | | |
|  Japan |  Great Britain | |
|
|
RANK 67 | Yoshihito Nishioka | 7-5 6-1 | Billy Harris | RANK 129 |
RANK 70 | Kei Nishikori | 3-6 3-6 | Jacob Fearnley | RANK 77 |
| Yosuke Watanuki / Takeru Yuzuki | 6-7(4) 6-7(3) | Joe Salisbury / Neal Skupski | |
RANK 67 | Yoshihito Nishioka | 6-3 7-6(0) | Jacob Fearnley | RANK 77 |
RANK 70 | Kei Nishikori | 6-2 6-3 | Billy Harris | RANK 129 |
| | | | |
| | | | |
|  Chinese Taipei |  United States | |
|
|
RANK 119 | Chun-Hsin Tseng | 2-6 2-6 | Marcos Giron | RANK 43 |
RANK 240 | Tung-Lin Wu | 6-7(4) 3-6 | Alex Michelsen | RANK 36 |
| Ray Ho / Tung-Lin Wu | 4-6 6-7(4) | Austin Krajicek / Rajeev Ram | |
RANK 680 | Tsung-Hao Huang | 2-6 3-6 | Mackenzie McDonald | RANK 125 |
RANK 240 | Tung-Lin Wu | NOT PLAYED | Marcos Giron | RANK 43 |
| | | | |
| | | | |
|  Czech Republic |  South Korea | |
|
|
RANK 24 | Jiri Lehecka | 6-3 6-3 | Gerard Campana Lee | RANK 381 |
RANK 25 | Tomas Machac | 6-2 6-2 | Soonwoo Kwon | RANK 363 |
| Tomas Machac / Jakub Mensik | 6-3 6-1 | Yunseong Chung / Ji Sung Nam | |
RANK 881 | Maxim Mrva | 7-6(4) 7-6(5) | Sanhui Shin | RANK 665 |
RANK 25 | Tomas Machac | NOT PLAYED | Gerard Campana Lee | RANK 381 |
| | | | |
| | | | |
|  Denmark |  Serbia | |
|
|
RANK 149 | Elmer Moller | 6-3 2-6 1-6 | Miomir Kecmanovic | RANK 55 |
RANK 12 | Holger Rune | 6-2 3-6 1-6 | Hamad Medjedovic | RANK 94 |
| Johannes Ingildsen / Holger Rune | 6-4 6-4 | Miomir Kecmanovic / Hamad Medjedovic | |
RANK 12 | Holger Rune | 6-2 6-4 | Miomir Kecmanovic | RANK 55 |
RANK 149 | Elmer Moller | 1-6 6-4 6-3 | Hamad Medjedovic | RANK 94 |
| | | | |
| | | | |
|  Switzerland |  Spain | |
|
|
RANK 287 | Dominic Stricker | 4-6 6-7(7) | Pedro Martinez | RANK 44 |
RANK 136 | Jerome Kym | 4-6 4-6 | Roberto Carballes Baena | RANK 51 |
| Marc-Andrea Huesler / Dominic Stricker | 4-6 5-7 | Pedro Martinez / Jaume Munar | |
RANK 283 | Remy Bertola | 6-7(2) 6-3 16-14 | Martin Landaluce | RANK 135 |
RANK 287 | Dominic Stricker | NOT PLAYED | Roberto Carballes Baena | RANK 51 |
| | | | |
| | | | |
|  Croatia |  Slovakia | |
|
|
RANK 158 | Duje Ajdukovic | 7-6(4) 6-3 | Lukas Klein | RANK 153 |
RANK 368 | Dino Prizmic | 6-2 6-2 | Jozef Kovalik | RANK 127 |
| Nikola Mektic / Mate Pavic | 7-6(4) 7-5 | Milos Karol / Lukas Klein | |
RANK 263 | Matej Dodig | 4-6 4-6 | Norbert Gombos | RANK 408 |
| | | | |
| | | | |
|  France |  Brazil | |
|
|
RANK 15 | Ugo Humbert | 7-5 6-3 | Joao Fonseca | RANK 99 |
RANK 19 | Arthur Fils | 6-1 6-4 | Thiago Seyboth Wild | RANK 76 |
| Benjamin Bonzi / Pierre-Hugues Herbert | 4-6 6-3 6-4 | Rafael Matos / Marcelo Melo | |
RANK 30 | Giovanni Mpetshi Perricard | 6-4 6-4 | Matheus Pucinelli De Almeida | RANK 302 |
RANK 19 | Arthur Fils | NOT PLAYED | Joao Fonseca | RANK 99 |
RANK 19 | Arthur Fils | NOT PLAYED | Joao Fonseca | RANK 99 |
| | | | |