| Argentina (3) |
|---|
| Delbonis, Federico | | Londero, Juan Ignacio | | Mayer, Leonardo |
| | Australien (2) |
|---|
| Ebden, Matthew | | Thompson, Jordan |
| | | Bosnien og Herzegovina (1) |
|---|
| Dzumhur, Damir |
|
| Bulgarien (1) |
|---|
| Dimitrov, Grigor |
| | Chile (2) |
|---|
| Garin, Christian | | Jarry, Nicolas |
| | Frankrig (1) |
|---|
| Mannarino, Adrian |
| | Tyskland (3) |
|---|
| Gojowczyk, Peter | | Zverev, Alexander | | Zverev, Mischa |
|
| Ungarn (1) |
|---|
| Fucsovics, Marton |
| | Italien (2) |
|---|
| Seppi, Andreas | | Sonego, Lorenzo |
| | Japan (2) |
|---|
| Daniel, Taro | | Nishioka, Yoshihito |
| | Letland (1) |
|---|
| Gulbis, Ernests |
|
| | | Serbien (1) |
|---|
| Tipsarevic, Janko |
| | Spanien (3) |
|---|
| Lopez, Feliciano | | Ramos-Vinolas, Albert | | Zapata Miralles, Bernabe |
|
| Schweizisk (1) |
|---|
| Wawrinka, Stan |
| |