| Argentina (1) |
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| Del Potro, Juan Martin |
| | Australia (3) |
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| Kyrgios, Nick | | Thompson, Jordan | | Tomic, Bernard |
| | Austria (1) |
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| Thiem, Dominic |
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| Cilic, Marin | | Coric, Borna |
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| Mannarino, Adrian | | Robert, Stephane | | Simon, Gilles |
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| Zverev, Mischa |
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| Nishioka, Yoshihito |
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| Escobedo, Ernesto | | Gomez, Lucas |
| | Serbia (1) |
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| Djokovic, Novak |
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| Klizan, Martin |
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| Lopez, Feliciano | | Nadal, Rafael |
| | | Ucraina (1) |
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| Dolgopolov, Alexandr |
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| Edmund, Kyle |
| | Stati Uniti (8) |
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| Fritz, Taylor | | Isner, John | | Johnson, Steve | | Kozlov, Stefan | | Querrey, Sam | | Sock, Jack | | Tiafoe, Frances | | Young, Donald |
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