| Argentina (2) |
|---|
| Pella, Guido | | Schwartzman, Diego |
| | Australien (1) |
|---|
| Tomic, Bernard |
| | Østrig (3) |
|---|
| Novak, Dennis | | Ofner, Sebastian | | Thiem, Dominic |
| | Bosnien og Herzegovina (1) |
|---|
| Dzumhur, Damir |
|
| Bulgarien (1) |
|---|
| Dimitrov, Grigor |
| | Frankrig (5) |
|---|
| Gasquet, Richard | | Herbert, Pierre-Hugues | | Pouille, Lucas | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Tyskland (3) |
|---|
| Kohlschreiber, Philipp | | Struff, Jan-Lennard | | Zverev, Alexander |
| | Italien (2) |
|---|
| Fabbiano, Thomas | | Fognini, Fabio |
|
| Letland (1) |
|---|
| Gulbis, Ernests |
| | Litauen (1) |
|---|
| Berankis, Ricardas |
| | Rusland (2) |
|---|
| Khachanov, Karen | | Rublev, Andrey |
| | Serbien (1) |
|---|
| Troicki, Viktor |
|
| Sydafrika (1) |
|---|
| Anderson, Kevin |
| | Spanien (5) |
|---|
| Carreno Busta, Pablo | | Ferrer, David | | Garcia-Lopez, Guillermo | | Lopez, Feliciano | | Ramos-Vinolas, Albert |
| | Storbritannien (1) |
|---|
| Edmund, Kyle |
| | USA (2) |
|---|
| Isner, John | | Querrey, Sam |
|
|