| Australien (1) |
|---|
| Ebden, Matthew |
| | Österreich (1) |
|---|
| Thiem, Dominic |
| | | Frankreich (3) |
|---|
| Gasquet, Richard | | Paire, Benoit | | Pouille, Lucas |
|
| Georgien (1) |
|---|
| Basilashvili, Nikoloz |
| | Deutschland (9) |
|---|
| Bachinger, Matthias | | Gojowczyk, Peter | | Kohlschreiber, Philipp | | Marterer, Maximilian | | Mayer, Florian | | Molleker, Rudolf | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| | Griechenland (1) |
|---|
| Tsitsipas, Stefano |
| | Ungarn (1) |
|---|
| Fucsovics, Marton |
|
| Italien (2) |
|---|
| Berrettini, Matteo | | Seppi, Andreas |
| | Japan (2) |
|---|
| Nishikori, Kei | | Sugita, Yuichi |
| | Die Niederlande (1) |
|---|
| Haase, Robin |
| |
| Russland (2) |
|---|
| Khachanov, Karen | | Youzhny, Mikhail |
| | | Slowenien (1) |
|---|
| Bedene, Aljaz |
| | Spanien (1) |
|---|
| Bautista Agut, Roberto |
|
| Schweiz (1) |
|---|
| Federer, Roger |
| | Tunesien (1) |
|---|
| Jaziri, Malek |
| | Vereinigte Staaten (2) |
|---|
| Johnson, Steve | | Kudla, Denis |
|