| | | | |
|  Kazakhstan |  Pakistan | |
|
|
RANK 75 | Alexander Shevchenko | 6-2 6-1 | Muzammil Murtaza | RANK |
RANK 230 | Beibit Zhukayev | 7-5 6-0 | Huzaifa Abdul Rehman | RANK |
| Alexander Shevchenko / Timofei Skatov | 6-4 7-6(1) | Aqeel Khan / Muzammil Murtaza | |
RANK 230 | Beibit Zhukayev | NOT PLAYED | Muzammil Murtaza | RANK |
| | | | |
| | | | |
|  Monaco |  Portugal | |
|
|
RANK 201 | Valentin Vacherot | 6-4 6-7(5) 6-2 | Jaime Faria | RANK 109 |
RANK | Benjamin Balleret | 3-6 1-6 | Nuno Borges | RANK 37 |
| Romain Arneodo / Hugo Nys | 3-6 6-3 5-7 | Nuno Borges / Francisco Cabral | |
RANK 201 | Valentin Vacherot | 4-6 6-1 6-2 | Nuno Borges | RANK 37 |
RANK | Romain Arneodo | 5-7 5-7 | Henrique Rocha | RANK 161 |
| | | | |
| | | | |
|  Uzbekistan |  Bosnia and Herzegovina | |
|
|
RANK 236 | Khumoyun Sultanov | 6-4 3-6 7-6(4) | Mirza Basic | RANK 563 |
RANK 561 | Sergey Fomin | 6-7(7) 3-6 | Damir Dzumhur | RANK 88 |
| Sergey Fomin / Khumoyun Sultanov | 6-7(6) 6-7(2) | Mirza Basic / Nerman Fatic | |
RANK 236 | Khumoyun Sultanov | 4-6 6-1 3-6 | Damir Dzumhur | RANK 88 |
RANK 561 | Sergey Fomin | NOT PLAYED | Mirza Basic | RANK 563 |
| | | | |
| | | | |
|  Colombia |  Barbados | |
|
|
RANK 214 | Nicolas Mejia | 6-2 6-0 | Xavier Lawrence | RANK |
RANK 345 | Adria Soriano Barrera | 2-6 4-6 | Darian King | RANK 1869 |
| Nicolas Barrientos / Cristian Rodriguez | 7-6(4) 6-2 | Darian King / | |
RANK 214 | Nicolas Mejia | 3-6 4-6 | Darian King | RANK 1869 |
RANK 345 | Adria Soriano Barrera | 6-2 6-2 | Kaipo Marshall | RANK |
| | | | |
| | | | |
|  Turkey |  Mexico | |
|
|
RANK 303 | Ergi Kirkin | 7-5 5-7 7-5 | Juan Alejandro Hernandez Serrano | RANK 658 |
RANK 596 | Yanki Erel | 6-4 1-6 6-1 | Rodrigo Pacheco Mendez | RANK 371 |
| Yanki Erel / Ergi Kirkin | 2-6 7-5 6-3 | / Rodrigo Pacheco Mendez | |
RANK 1413 | Atakan Karahan | 6-3 6-3 | Rafael Alfonso De Alba Valdes | RANK 1319 |
RANK 890 | Mert Naci Turker | 6-1 6-2 | Eugenio Gonzalez Fitzmaurice | RANK |
| | | | |
| | | | |
|  Lebanon |  Peru | |
|
|
RANK 231 | Benjamin Hassan | 3-6 2-6 | Ignacio Buse | RANK 237 |
RANK 166 | Hady Habib | 3-6 6-2 4-6 | Gonzalo Bueno | RANK 256 |
| Hady Habib / Benjamin Hassan | 4-6 5-7 | Ignacio Buse / Conner Huertas Del Pino | |
RANK 1233 | Fadi Bidan | 6-7(4) 6-7(3) | Conner Huertas Del Pino | RANK 794 |
RANK 231 | Benjamin Hassan | NOT PLAYED | Gonzalo Bueno | RANK 256 |
| | | | |
| | | | |
|  Tunisia |  Ukraine | |
|
|
RANK 227 | Aziz Dougaz | 3-6 7-6(6) 3-6 | Vitaliy Sachko | RANK 392 |
RANK 511 | Moez Echargui | 7-6(1) 6-2 | Oleksandr Ovcharenko | RANK 311 |
| Aziz Dougaz / Aziz Ouakaa | 6-3 6-4 | Oleksii Krutykh / Vitaliy Sachko | |
RANK 227 | Aziz Dougaz | 2-6 2-6 | Oleksandr Ovcharenko | RANK 311 |
RANK 511 | Moez Echargui | 7-5 6-1 | Vitaliy Sachko | RANK 392 |
| | | | |
| | | | |
|  Ecuador |  Uruguay | |
|
|
RANK 241 | Andres Andrade | 6-4 6-0 | Francisco Llanes | RANK |
RANK 257 | Alvaro Guillen Meza | 6-7(6) 0-6 | Franco Roncadelli | RANK 372 |
| Andres Andrade / Diego Hidalgo | 6-3 7-5 | Ariel Behar / Ignacio Carou | |
RANK 241 | Andres Andrade | 6-4 6-1 | Franco Roncadelli | RANK 372 |
RANK 257 | Alvaro Guillen Meza | NOT PLAYED | Francisco Llanes | RANK |
| | | | |
| | | | |
|  Romania |  Bulgaria | |
|
|
RANK 315 | Cezar Cretu | 6-7(6) 6-3 7-6(3) | Petr Nesterov | RANK 437 |
RANK 234 | Filip Cristian Jianu | 3-6 6-7(3) | Iliyan Radulov | RANK 533 |
| Gabi Adrian Boitan / Victor Vlad Cornea | 3-6 3-6 | Alexander Donski / Petr Nesterov | |
RANK 234 | Filip Cristian Jianu | 3-6 6-3 3-6 | Adrian Andreev | RANK 233 |
RANK 315 | Cezar Cretu | NOT PLAYED | Iliyan Radulov | RANK 533 |
| | | | |
| | | | |
|  India |  Togo | |
|
|
RANK 365 | Sasi Kumar Mukund | 6-2 6-1 | Liova Ajavon | RANK |
RANK 406 | Ramkumar Ramanathan | 6-0 6-2 | Thomas Setodji | RANK 1256 |
| N.Sriram Balaji / Rithvik Choudary Bollipalli | 6-2 6-1 | M'lapa Tingou Akomlo / | |
RANK 406 | Ramkumar Ramanathan | NOT PLAYED | Liova Ajavon | RANK |
| | | | |
| | | | |
|  Greece |  Egypt | |
|
|
RANK 1640 | Christos Antonopoulos | 2-6 2-6 | Mohamed Safwat | RANK 460 |
RANK 471 | Stefanos Sakellaridis | 6-1 6-2 | Karim-Mohamed Maamoun | RANK 882 |
| Aristotelis Thanos / Petros Tsitsipas | 6-7(5) 6-7(6) | Mohamed Safwat / Faris Zakaryia | |
RANK 471 | Stefanos Sakellaridis | 6-4 3-6 6-2 | Mohamed Safwat | RANK 460 |
RANK 592 | Aristotelis Thanos | 6-0 6-3 | Amr Asrawy | RANK 660 |
| | | | |
| | | | |
|  Luxembourg |  Lithuania | |
|
|
RANK 282 | Chris Rodesch | 3-6 1-6 | Edas Butvilas | RANK 247 |
RANK 718 | Alex Knaff | 6-4 3-6 6-2 | Vilius Gaubas | RANK 192 |
| Alex Knaff / Chris Rodesch | 6-2 7-6(3) | Edas Butvilas / Vilius Gaubas | |
RANK 282 | Chris Rodesch | 6-4 6-4 | Vilius Gaubas | RANK 192 |
RANK 718 | Alex Knaff | NOT PLAYED | Edas Butvilas | RANK 247 |
| | | | |
| | | | |
|  Georgia |  Poland | |
|
|
RANK 489 | Aleksandre Bakshi | 3-6 6-7(4) | Kamil Majchrzak | RANK 115 |
RANK 450 | Saba Purtseladze | 3-6 7-5 4-6 | Maks Kasnikowski | RANK 217 |
| Aleksandre Bakshi / Zura Tkemaladze | 5-7 1-6 | Karol Drzewiecki / Jan Zielinski | |
RANK 716 | Zura Tkemaladze | 7-5 6-7(5) 8-10 | Martyn Pawelski | RANK 775 |
RANK 489 | Aleksandre Bakshi | NOT PLAYED | Maks Kasnikowski | RANK 217 |
| | | | |