| Argentina (1) |
|---|
| Londero, Juan Ignacio |
| | Hviderusland (1) |
|---|
| Gerasimov, Egor |
| | Bosnien og Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Chile (2) |
|---|
| Garin, Christian | | Jarry, Nicolas |
|
| Kroatien (2) |
|---|
| Cilic, Marin | | Karlovic, Ivo |
| | | Frankrig (3) |
|---|
| Chardy, Jeremy | | Herbert, Pierre-Hugues | | Mannarino, Adrian |
| | Tyskland (1) |
|---|
| Kohlschreiber, Philipp |
|
| Italien (2) |
|---|
| Fabbiano, Thomas | | Seppi, Andreas |
| | Kasakhstan (2) |
|---|
| Bublik, Alexander | | Kukushkin, Mikhail |
| | Litauen (1) |
|---|
| Berankis, Ricardas |
| | Rusland (7) |
|---|
| Avidzba, Alen | | Donskoy, Evgeny | | Dubrivnyy, Artem | | Kachmazov, Alibek | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
|
| Serbien (3) |
|---|
| Kecmanovic, Miomir | | Lajovic, Dusan | | Milojevic, Nikola |
| | Slovenien (1) |
|---|
| Bedene, Aljaz |
| | Spanien (1) |
|---|
| Carballes Baena, Roberto |
|