| Argentina (1) |
|---|
| Navone, Mariano |
| | Australien (2) |
|---|
| De Minaur, Alex | | Popyrin, Alexei |
| | Østrig (2) |
|---|
| Schwaerzler, Joel | | Thiem, Dominic |
| | Brasilien (1) |
|---|
| Seyboth Wild, Thiago |
|
| Bulgarien (1) |
|---|
| Dimitrov, Grigor |
| | | Tjekkiet (2) |
|---|
| Machac, Tomas | | Mensik, Jakub |
| | Frankrig (2) |
|---|
| Halys, Quentin | | Monfils, Gael |
|
| Tyskland (2) |
|---|
| Struff, Jan-Lennard | | Zverev, Alexander |
| | Ungarn (2) |
|---|
| Fucsovics, Marton | | Marozsan, Fabian |
| | Italien (5) |
|---|
| Berrettini, Matteo | | Cobolli, Flavio | | Darderi, Luciano | | Musetti, Lorenzo | | Sonego, Lorenzo |
| |
| Rusland (1) |
|---|
| Khachanov, Karen |
| | Serbien (1) |
|---|
| Kecmanovic, Miomir |
| | Spanien (1) |
|---|
| Davidovich Fokina, Alejandro |
| | Storbritannien (2) |
|---|
| Draper, Jack | | Norrie, Cameron |
|
| USA (5) |
|---|
| Giron, Marcos | | Michelsen, Alex | | Nakashima, Brandon | | Paul, Tommy | | Tiafoe, Frances |
|