| Argentina (2) |
|---|
| Coria, Federico | | Delbonis, Federico |
| | Australia (1) |
|---|
| O'Connell, Christopher |
| | Bielorussia (1) |
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| Gerasimov, Egor |
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| Monteiro, Thiago |
|
| Francia (5) |
|---|
| Chardy, Jeremy | | Mannarino, Adrian | | Monfils, Gael | | Pouille, Lucas | | Rinderknech, Arthur |
| | Georgia (1) |
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| Basilashvili, Nikoloz |
| | Germania (2) |
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| Moraing, Mats | | Topo, Marko |
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| Berankis, Ricardas |
|
| | Serbia (5) |
|---|
| Djokovic, Novak | | Kecmanovic, Miomir | | Krstin, Pedja | | Lajovic, Dusan | | Medjedovic, Hamad |
| | Slovacchia (3) |
|---|
| Klein, Lukas | | Martin, Andrej | | Molcan, Alex |
| | Corea del Sud (1) |
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| Kwon, Soonwoo |
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| Spagna (2) |
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| Carballes Baena, Roberto | | Verdasco, Fernando |
| | Stati Uniti (1) |
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| Sandgren, Tennys |
| |