| Australia (2) |
|---|
| Kyrgios, Nick | | Popyrin, Alexei |
| | Austria (1) |
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| Thiem, Dominic |
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| Goffin, David | | Mertens, Elise |
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| Gulbis, Ernests |
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| Khachanov, Karen | | Medvedev, Daniil | | Pavlyuchenkova, Anastasia | | Rublev, Andrey |
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| Bellis, CiCi | | Fritz, Taylor | | Isner, John |
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