| Argentina (2) |
|---|
| Delbonis, Federico | | Londero, Juan Ignacio |
| | Australia (5) |
|---|
| Bolt, Alex | | De Minaur, Alex | | Duckworth, James | | Popyrin, Alexei | | Thompson, Jordan |
| | Canada (1) |
|---|
| Auger-Aliassime, Felix |
| |
| Francia (5) |
|---|
| Barrere, Gregoire | | Chardy, Jeremy | | Herbert, Pierre-Hugues | | Robert, Stephane | | Simon, Gilles |
| | Germania (1) |
|---|
| Struff, Jan-Lennard |
| | Italia (1) |
|---|
| Caruso, Salvatore |
| | Kazakistan (1) |
|---|
| Bublik, Alexander |
|
| | | Slovenia (1) |
|---|
| Bedene, Aljaz |
| | Sud Africa (1) |
|---|
| Harris, Lloyd |
|
| Spagna (4) |
|---|
| Carreno Busta, Pablo | | Munar, Jaume | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| | Regno Unito (1) |
|---|
| Evans, Daniel |
| | Stati Uniti (4) |
|---|
| Fritz, Taylor | | Opelka, Reilly | | Paul, Tommy | | Querrey, Sam |
| |