| Australia (1) |
|---|
| Ebden, Matthew |
| | Bosnia y Herzegovina (1) |
|---|
| Basic, Mirza |
| | Bulgaria (3) |
|---|
| Andreev, Adrian | | Kuzmanov, Dimitar | | Lazarov, Alexandar |
| | Francia (2) |
|---|
| Mannarino, Adrian | | Monfils, Gael |
|
| Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | Alemania (3) |
|---|
| Brands, Daniel | | Maden, Yannick | | Struff, Jan-Lennard |
| | Grecia (1) |
|---|
| Tsitsipas, Stefano |
| | Hungría (1) |
|---|
| Fucsovics, Marton |
|
| Italia (3) |
|---|
| Berrettini, Matteo | | Seppi, Andreas | | Travaglia, Stefano |
| | Kazajstán (1) |
|---|
| Kukushkin, Mikhail |
| | Países Bajos (1) |
|---|
| Haase, Robin |
| |
| Rusia (2) |
|---|
| Khachanov, Karen | | Medvedev, Daniil |
| | Serbia (2) |
|---|
| Djere, Laslo | | Troicki, Viktor |
| | Eslovaquia (1) |
|---|
| Klizan, Martin |
| | España (2) |
|---|
| Bautista Agut, Roberto | | Verdasco, Fernando |
|
| | Uzbekistán (1) |
|---|
| Istomin, Denis |
|