| Australië (1) |
|---|
| Ebden, Matthew |
| | Wit-Rusland (2) |
|---|
| Gerasimov, Egor | | Ivashka, Ilya |
| | Bosnië-Herzegovina (1) |
|---|
| Dzumhur, Damir |
| |
| Kroatië (2) |
|---|
| Cilic, Marin | | Coric, Borna |
| | Cyprus (1) |
|---|
| Baghdatis, Marcos |
| | Tsjechië (2) |
|---|
| Berdych, Tomas | | Vesely, Jiri |
| | Egypte (1) |
|---|
| Safwat, Mohamed |
|
| Frankrijk (3) |
|---|
| Monfils, Gael | | Moutet, Corentin | | Paire, Benoit |
| | Georgië (1) |
|---|
| Basilashvili, Nikoloz |
| | Duitsland (2) |
|---|
| Kohlschreiber, Philipp | | Struff, Jan-Lennard |
| | Griekenland (1) |
|---|
| Tsitsipas, Stefano |
|
| Hongarije (1) |
|---|
| Fucsovics, Marton |
| | India (1) |
|---|
| Ramanathan, Ramkumar |
| | Italië (2) |
|---|
| Berrettini, Matteo | | Fabbiano, Thomas |
| |
| Kazachstan (1) |
|---|
| Kukushkin, Mikhail |
| | Litouwen (1) |
|---|
| Berankis, Ricardas |
| | Nederland (1) |
|---|
| Haase, Robin |
| |
| Rusland (2) |
|---|
| Khachanov, Karen | | Medvedev, Daniil |
| | Slovenië (1) |
|---|
| Bedene, Aljaz |
| | Spanje (2) |
|---|
| Bautista Agut, Roberto | | Verdasco, Fernando |
| | Zwitserland (1) |
|---|
| Federer, Roger |
|
| Verenigde Staten (1) |
|---|
| Kudla, Denis |
|