| Argentina (1) |
|---|
| Berlocq, Carlos |
| | Australia (1) |
|---|
| Tomic, Bernard |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Canada (1) |
|---|
| Pospisil, Vasek |
|
| | Francia (5) |
|---|
| Gasquet, Richard | | Monfils, Gael | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles |
| | Germania (8) |
|---|
| Brown, Dustin | | Haas, Tommy | | Kohlschreiber, Philipp | | Marterer, Maximilian | | Mayer, Florian | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| |
| Giappone (2) |
|---|
| Nishikori, Kei | | Sugita, Yuichi |
| | | Portogallo (1) |
|---|
| Sousa, Joao |
| | Russia (3) |
|---|
| Khachanov, Karen | | Rublev, Andrey | | Youzhny, Mikhail |
|
| Slovacchia (1) |
|---|
| Lacko, Lukas |
| | Spagna (4) |
|---|
| Bautista Agut, Roberto | | Ferrer, David | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| | Svizzera (1) |
|---|
| Federer, Roger |
| |