| Argentina (2) |
|---|
| Pella, Guido | | Schwartzman, Diego |
| | Austria (1) |
|---|
| Haider-Maurer, Andreas |
| | Bosnia-Erzegovina (1) |
|---|
| Basic, Mirza |
| |
| Cipro (1) |
|---|
| Baghdatis, Marcos |
| | | Germania (11) |
|---|
| Bachinger, Matthias | | Brown, Dustin | | Hanfmann, Yannick | | Kohlschreiber, Philipp | | Maden, Yannick | | Marterer, Maximilian | | Masur, Daniel | | Mayer, Florian | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| | Ungheria (1) |
|---|
| Fucsovics, Marton |
|
| Italia (2) |
|---|
| Cecchinato, Marco | | Fognini, Fabio |
| | Giappone (1) |
|---|
| Sugita, Yuichi |
| | Kazakistan (1) |
|---|
| Kukushkin, Mikhail |
| |
| | Slovacchia (1) |
|---|
| Klizan, Martin |
| | Corea del Sud (1) |
|---|
| Chung, Hyeon |
| | Spagna (1) |
|---|
| Bautista Agut, Roberto |
|