| Argentina (1) |
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| Schwartzman, Diego |
| | Austria (3) |
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| Melzer, Jurgen | | Novak, Dennis | | Thiem, Dominic |
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| Bemelmans, Ruben |
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| Dimitrov, Grigor |
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| | | France (4) |
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| Herbert, Pierre-Hugues | | Monfils, Gael | | Pouille, Lucas | | Tsonga, Jo-Wilfried |
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| Isner, John | | Johnson, Steve | | Kudla, Denis | | Querrey, Sam | | Tiafoe, Frances |
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