| Australia (1) |
|---|
| Kyrgios, Nick |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Belgium (1) |
|---|
| Mertens, Elise |
| | Estonia (1) |
|---|
| Kontaveit, Anett |
|
| | Germany (2) |
|---|
| Kerber, Angelique | | Zverev, Alexander |
| | Netherlands (1) |
|---|
| Bertens, Kiki |
| |
| | Russia (3) |
|---|
| Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Rublev, Andrey |
| | Spain (2) |
|---|
| Muguruza, Garbiñe | | Nadal, Rafael |
| | Switzerland (1) |
|---|
| Wawrinka, Stan |
|