| Argentina (2) |
|---|
| Baez, Sebastian | | Etcheverry, Tomas Martin |
| | Australia (1) |
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| Thompson, Jordan |
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| Machac, Tomas |
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| Zverev, Alexander |
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| | | Serbia (2) |
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| Bautista Agut, Roberto |
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| Giron, Marcos | | Nakashima, Brandon | | Tiafoe, Frances |
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