Australia (4) |
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Bolt, Alex | De Minaur, Alex | Kyrgios, Nick | Millman, John |
| Bosnia-Erzegovina (1) |
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Dzumhur, Damir |
| Bulgaria (1) |
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Dimitrov, Grigor |
| Canada (1) |
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Auger-Aliassime, Felix |
|
Francia (2) |
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Humbert, Ugo | Mannarino, Adrian |
| Germania (2) |
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Zverev, Alexander | Zverev, Mischa |
| | Messico (1) |
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Lopez Villasenor, Gerardo |
|
| Serbia (2) |
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Kecmanovic, Miomir | Lajovic, Dusan |
| Corea del Sud (1) |
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Kwon, Soonwoo |
| Spagna (4) |
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Andujar, Pablo | Lopez, Feliciano | Martinez, Pedro | Nadal, Rafael |
|
Svizzera (1) |
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Wawrinka, Stan |
| | Regno Unito (2) |
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Edmund, Kyle | Norrie, Cameron |
| Stati Uniti (8) |
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Fritz, Taylor | Giron, Marcos | Isner, John | Johnson, Steve | McDonald, Mackenzie | Opelka, Reilly | Paul, Tommy | Tiafoe, Frances |
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