| Argentina (2) |
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| Pella, Guido | | Schwartzman, Diego |
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| Kyrgios, Nick |
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| Bemelmans, Ruben | | Darcis, Steve | | Goffin, David |
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| Setkic, Aldin |
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| Canada (1) |
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| Shapovalov, Denis |
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| Basilashvili, Nikoloz |
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| Travaglia, Stefano |
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| Donaldson, Jared | | Tiafoe, Frances |
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