| Croatia (2) |
|---|
| Cilic, Marin | | Coric, Borna |
| | France (13) |
|---|
| Barrere, Gregoire | | Benneteau, Julien | | Chardy, Jeremy | | De Schepper, Kenny | | Gasquet, Richard | | Halys, Quentin | | Hemery, Calvin | | Herbert, Pierre-Hugues | | Lamasine, Tristan | | Mathieu, Paul-Henri | | Millot, Vincent | | Paire, Benoit | | Tsonga, Jo-Wilfried |
| | Germany (4) |
|---|
| Brown, Dustin | | Kamke, Tobias | | Zverev, Alexander | | Zverev, Mischa |
| | Russia (2) |
|---|
| Khachanov, Karen | | Medvedev, Daniil |
|
| Slovenia (1) |
|---|
| Bedene, Aljaz |
| | Spain (4) |
|---|
| Garcia-Lopez, Guillermo | | Granollers, Marcel | | Lopez, Feliciano | | Verdasco, Fernando |
| | | Ukraine (1) |
|---|
| Marchenko, Illya |
|