| Argentina (1) |
|---|
| Schwartzman, Diego |
| | Australien (2) |
|---|
| Ebden, Matthew | | Tomic, Bernard |
| | |
| | Kroatien (3) |
|---|
| Cilic, Marin | | Karlovic, Ivo | | Skugor, Franko |
| | | Frankrig (4) |
|---|
| Gasquet, Richard | | Mannarino, Adrian | | Paire, Benoit | | Simon, Gilles |
|
| Grækenland (1) |
|---|
| Tsitsipas, Stefano |
| | Japan (5) |
|---|
| Daniel, Taro | | Soeda, Go | | Sugita, Yuichi | | Takahashi, Yusuke | | Uchiyama, Yasutaka |
| | | Rusland (1) |
|---|
| Medvedev, Daniil |
|
| Serbien (1) |
|---|
| Troicki, Viktor |
| | Sydafrika (1) |
|---|
| Anderson, Kevin |
| | Spanien (2) |
|---|
| Lopez, Feliciano | | Ramos-Vinolas, Albert |
| |
| Ukraine (1) |
|---|
| Dolgopolov, Alexandr |
| | USA (4) |
|---|
| Harrison, Ryan | | Johnson, Steve | | Querrey, Sam | | Young, Donald |
|