| Argentina (1) |
|---|
| Kicker, Nicolas |
| | | Francia (10) |
|---|
| Benneteau, Julien | | De Schepper, Kenny | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Mahut, Nicolas | | Mathieu, Paul-Henri | | Millot, Vincent | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles |
| | Georgia (1) |
|---|
| Basilashvili, Nikoloz |
|
| Germania (4) |
|---|
| Brown, Dustin | | Gojowczyk, Peter | | Maden, Yannick | | Zverev, Mischa |
| | Grecia (1) |
|---|
| Tsitsipas, Stefano |
| | Italia (3) |
|---|
| Bolelli, Simone | | Giannessi, Alessandro | | Seppi, Andreas |
| | Lussemburgo (1) |
|---|
| Muller, Gilles |
|
| | Slovacchia (1) |
|---|
| Gombos, Norbert |
| | Spagna (3) |
|---|
| Almagro, Nicolas | | Carreno Busta, Pablo | | Granollers, Marcel |
| | Svizzera (1) |
|---|
| Laaksonen, Henri |
|
| Usbechistan (1) |
|---|
| Istomin, Denis |
|