| | Canada (2) |
|---|
| Diallo, Gabriel | | Shapovalov, Denis |
| | China (3) |
|---|
| Bu, Yunchaokete | | Cui, Jie | | Shang, Juncheng |
| | France (3) |
|---|
| Fils, Arthur | | Grenier, Hugo | | Muller, Alexandre |
|
| Hong Kong (1) |
|---|
| Wong, Coleman |
| | Hungary (1) |
|---|
| Marozsan, Fabian |
| | Italy (4) |
|---|
| Darderi, Luciano | | Musetti, Lorenzo | | Passaro, Francesco | | Sonego, Lorenzo |
| |
| Kazakhstan (1) |
|---|
| Yevseyev, Denis |
| | | Russia (4) |
|---|
| Khachanov, Karen | | Kotov, Pavel | | Rublev, Andrey | | Safiullin, Roman |
| | Serbia (1) |
|---|
| Kecmanovic, Miomir |
|
| Spain (5) |
|---|
| Carballes Baena, Roberto | | Davidovich Fokina, Alejandro | | Martinez, Pedro | | Moro Canas, Alejandro | | Munar, Jaume |
| | Swiss (1) |
|---|
| Huesler, Marc-Andrea |
| | United Kingdom (1) |
|---|
| Norrie, Cameron |
| | United States (2) |
|---|
| Nakashima, Brandon | | Tien, Learner |
|