| Argentina (1) |
|---|
| Pella, Guido |
| | Australia (2) |
|---|
| Millman, John | | Tomic, Bernard |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
|
| | | Francia (3) |
|---|
| Gasquet, Richard | | Mannarino, Adrian | | Pouille, Lucas |
| | Germania (2) |
|---|
| Mayer, Florian | | Zverev, Alexander |
|
| Italia (3) |
|---|
| Fognini, Fabio | | Lorenzi, Paolo | | Seppi, Andreas |
| | Russia (2) |
|---|
| Kravchuk, Konstantin | | Kuznetsov, Andrey |
| | Serbia (1) |
|---|
| Troicki, Viktor |
| | Spagna (6) |
|---|
| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Ferrer, David | | Garcia-Lopez, Guillermo | | Nadal, Rafael | | Ramos-Vinolas, Albert |
|
| | | Regno Unito (2) |
|---|
| Edmund, Kyle | | Murray, Andy |
| | Stati Uniti (3) |
|---|
| Johnson, Steve | | Querrey, Sam | | Sock, Jack |
|
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