| Australia (1) |
|---|
| Thompson, Jordan |
| | | Francia (6) |
|---|
| Barrere, Gregoire | | Chardy, Jeremy | | Herbert, Pierre-Hugues | | Mannarino, Adrian | | Moutet, Corentin | | Tsonga, Jo-Wilfried |
| | Ungheria (1) |
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| Fucsovics, Marton |
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| Italia (2) |
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| Cecchinato, Marco | | Sonego, Lorenzo |
| | Kazakistan (2) |
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| Bublik, Alexander | | Kukushkin, Mikhail |
| | Lituania (1) |
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| Berankis, Ricardas |
| |
| Serbia (3) |
|---|
| Djere, Laslo | | Kecmanovic, Miomir | | Krajinovic, Filip |
| | Slovenia (1) |
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| Bedene, Aljaz |
| | Spagna (2) |
|---|
| Andujar, Pablo | | Verdasco, Fernando |
| |
| Svizzera (1) |
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| Wawrinka, Stan |
| | | | Regno Unito (1) |
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| Edmund, Kyle |
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| Stati Uniti (2) |
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| Sandgren, Tennys | | Tiafoe, Frances |
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