| Argentina (1) |
|---|
| Londero, Juan Ignacio |
| | Belarus (1) |
|---|
| Gerasimov, Egor |
| | Bosnia-Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Chile (2) |
|---|
| Garin, Christian | | Jarry, Nicolas |
|
| Croatia (2) |
|---|
| Cilic, Marin | | Karlovic, Ivo |
| | Czech Republic (1) |
|---|
| Rosol, Lukas |
| | France (3) |
|---|
| Chardy, Jeremy | | Herbert, Pierre-Hugues | | Mannarino, Adrian |
| | Germany (1) |
|---|
| Kohlschreiber, Philipp |
|
| Italy (2) |
|---|
| Fabbiano, Thomas | | Seppi, Andreas |
| | Kazakhstan (2) |
|---|
| Bublik, Alexander | | Kukushkin, Mikhail |
| | Lithuania (1) |
|---|
| Berankis, Ricardas |
| | Russia (7) |
|---|
| Avidzba, Alen | | Donskoy, Evgeny | | Dubrivnyy, Artem | | Kachmazov, Alibek | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
|
| Serbia (3) |
|---|
| Kecmanovic, Miomir | | Lajovic, Dusan | | Milojevic, Nikola |
| | Slovenia (1) |
|---|
| Bedene, Aljaz |
| | Spain (1) |
|---|
| Carballes Baena, Roberto |
|