| Argentyna (2) |
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| Delbonis, Federico | | Schwartzman, Diego |
| | Australia (3) |
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| De Minaur, Alex | | Popyrin, Alexei | | Thompson, Jordan |
| | |
| Chile (1) |
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| Garin, Christian |
| | Francja (3) |
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| Gasquet, Richard | | Paire, Benoit | | Rinderknech, Arthur |
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| Struff, Jan-Lennard |
| | Węgry (1) |
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| Fucsovics, Marton |
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| Włochy (3) |
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| Mager, Gianluca | | Musetti, Lorenzo | | Sinner, Jannik |
| | Holandia (1) |
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| Zandschulp, Botic van de |
| | | Afryka Południowa (1) |
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| Harris, Lloyd |
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| Hiszpania (3) |
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| Bautista Agut, Roberto | | Davidovich Fokina, Alejandro | | Ramos-Vinolas, Albert |
| | Switzerland (1) |
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| Laaksonen, Henri |
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| Murray, Andy |
| | Stany Zjednoczone (4) |
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| Brooksby, Jenson | | Nakashima, Brandon | | Opelka, Reilly | | Tiafoe, Frances |
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