| Australia (2) |
|---|
| Kyrgios, Nick | | Popyrin, Alexei |
| | Austria (1) |
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| Thiem, Dominic |
| | Belgia (2) |
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| Goffin, David | | Mertens, Elise |
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| Vekic, Donna |
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| Republika Czeska (1) |
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| Pliskova, Karolina |
| | Estonia (1) |
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| Kontaveit, Anett |
| | | Niemcy (2) |
|---|
| Kerber, Angelique | | Zverev, Alexander |
|
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| Diyas, Zarina | | Putintseva, Yulia |
| | | Holandia (1) |
|---|
| Bertens, Kiki |
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| | | Rosja (4) |
|---|
| Khachanov, Karen | | Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Rublev, Andrey |
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|---|
| Carreno Busta, Pablo | | Muguruza, Garbiñe | | Nadal, Rafael | | Verdasco, Fernando |
|
| Switzerland (2) |
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| Bencic, Belinda | | Wawrinka, Stan |
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| Svitolina, Elina |
| | Stany Zjednoczone (3) |
|---|
| Bellis, CiCi | | Fritz, Taylor | | Isner, John |
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