| Argentina (2) |
|---|
| Bagnis, Facundo | | Delbonis, Federico |
| | Australien (3) |
|---|
| Kokkinakis, Thanasi | | Millman, John | | O'Connell, Christopher |
| | | Hviderusland (1) |
|---|
| Ivashka, Ilya |
|
| Canada (1) |
|---|
| Shapovalov, Denis |
| | Finland (1) |
|---|
| Ruusuvuori, Emil |
| | Frankrig (2) |
|---|
| Gasquet, Richard | | Paire, Benoit |
| | Georgien (1) |
|---|
| Basilashvili, Nikoloz |
|
| Italien (2) |
|---|
| Cecchinato, Marco | | Fognini, Fabio |
| | Kasakhstan (1) |
|---|
| Bublik, Alexander |
| | Litauen (1) |
|---|
| Berankis, Ricardas |
| | Holland (1) |
|---|
| Griekspoor, Tallon |
|
| | Polen (1) |
|---|
| Majchrzak, Kamil |
| | | Rusland (1) |
|---|
| Medvedev, Daniil |
|
| Spanien (2) |
|---|
| Andujar, Pablo | | Ramos-Vinolas, Albert |
| | Schweizisk (2) |
|---|
| Nikles, Johan | | Riedi, Leandro |
| | USA (3) |
|---|
| Giron, Marcos | | Opelka, Reilly | | Paul, Tommy |
|