| Australië (3) |
|---|
| De Minaur, Alex | | Ebden, Matthew | | Thompson, Jordan |
| | Oostenrijk (1) |
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| Rodionov, Jurij |
| | | Chili (2) |
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| Garin, Christian | | Jarry, Nicolas |
|
| | Frankrijk (5) |
|---|
| Chardy, Jeremy | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mannarino, Adrian |
| | Griekenland (1) |
|---|
| Tsitsipas, Stefano |
| | Italië (5) |
|---|
| Caruso, Salvatore | | Fabbiano, Thomas | | Seppi, Andreas | | Sinner, Jannik | | Sonego, Lorenzo |
|
| Kazachstan (1) |
|---|
| Kukushkin, Mikhail |
| | Nederland (2) |
|---|
| Bakker, Thiemo de | | Haase, Robin |
| | | Slovenië (1) |
|---|
| Bedene, Aljaz |
|
| Spanje (2) |
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| Davidovich Fokina, Alejandro | | Verdasco, Fernando |
| | Verenigde Staten (3) |
|---|
| Fritz, Taylor | | Paul, Tommy | | Tiafoe, Frances |
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