| Australien (1) |
|---|
| Ebden, Matthew |
| | Bosnien und Herzegowina (1) |
|---|
| Basic, Mirza |
| | Bulgarien (3) |
|---|
| Andreev, Adrian | | Kuzmanov, Dimitar | | Lazarov, Alexandar |
| | Frankreich (2) |
|---|
| Mannarino, Adrian | | Monfils, Gael |
|
| Georgien (1) |
|---|
| Basilashvili, Nikoloz |
| | Deutschland (3) |
|---|
| Brands, Daniel | | Maden, Yannick | | Struff, Jan-Lennard |
| | Griechenland (1) |
|---|
| Tsitsipas, Stefano |
| | Ungarn (1) |
|---|
| Fucsovics, Marton |
|
| Italien (3) |
|---|
| Berrettini, Matteo | | Seppi, Andreas | | Travaglia, Stefano |
| | Kasachstan (1) |
|---|
| Kukushkin, Mikhail |
| | Die Niederlande (1) |
|---|
| Haase, Robin |
| | Rumänien (1) |
|---|
| Copil, Marius |
|
| Russland (2) |
|---|
| Khachanov, Karen | | Medvedev, Daniil |
| | Serbien (2) |
|---|
| Djere, Laslo | | Troicki, Viktor |
| | Slowakei (1) |
|---|
| Klizan, Martin |
| | Spanien (2) |
|---|
| Bautista Agut, Roberto | | Verdasco, Fernando |
|
| Schweiz (1) |
|---|
| Wawrinka, Stan |
| | Usbekistan (1) |
|---|
| Istomin, Denis |
|