| Argentina (3) |
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| Cerundolo, Francisco | | Etcheverry, Tomas Martin | | Schwartzman, Diego |
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| De Minaur, Alex | | Kokkinakis, Thanasi | | Purcell, Max | | Vukic, Aleksandar |
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| Dimitrov, Grigor |
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| Auger-Aliassime, Felix | | Diallo, Gabriel | | Galarneau, Alexis | | Pospisil, Vasek | | Raonic, Milos |
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| Garin, Christian | | Jarry, Nicolas |
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| Lehecka, Jiri |
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| Evans, Daniel | | Murray, Andy | | Norrie, Cameron |
| | Stati Uniti (10) |
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