| Argentina (2) |
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| Del Potro, Juan Martin | | Schwartzman, Diego |
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| Thiem, Dominic |
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| Auger-Aliassime, Felix | | Polansky, Peter | | Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
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| Cilic, Marin | | Coric, Borna |
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| Chardy, Jeremy | | Herbert, Pierre-Hugues | | Mannarino, Adrian | | Paire, Benoit | | Pouille, Lucas |
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| Haase, Robin |
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| Anderson, Kevin |
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| Wawrinka, Stan |
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| Edmund, Kyle |
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