| Argentina (1) |
|---|
| Pella, Guido |
| | Australia (1) |
|---|
| Thompson, Jordan |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Repubblica Ceca (1) |
|---|
| Vesely, Jiri |
|
| Francia (5) |
|---|
| Humbert, Ugo | | Mannarino, Adrian | | Moutet, Corentin | | Pouille, Lucas | | Simon, Gilles |
| | Germania (2) |
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| Kuhn, Nicola | | Struff, Jan-Lennard |
| | Italia (2) |
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| Caruso, Salvatore | | Travaglia, Stefano |
| |
| Russia (2) |
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| Khachanov, Karen | | Medvedev, Daniil |
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| Kecmanovic, Miomir | | Lajovic, Dusan |
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| Klein, Lukas |
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| Harris, Lloyd |
|
| Spagna (6) |
|---|
| Andujar, Pablo | | Bautista Agut, Roberto | | Carballes Baena, Roberto | | Carreno Busta, Pablo | | Lopez, Feliciano | | Munar, Jaume |
| | Stati Uniti (2) |
|---|
| Querrey, Sam | | Sandgren, Tennys |
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