| Argentina (2) |
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| Cerundolo, Juan Manuel | | Navone, Mariano |
| | Australia (1) |
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| Hijikata, Rinky |
| | | Canada (1) |
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| Shapovalov, Denis |
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| Cile (1) |
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| Tabilo, Alejandro |
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| Lehecka, Jiri |
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| Rune, Holger |
| | Francia (5) |
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| Fils, Arthur | | Halys, Quentin | | Humbert, Ugo | | Mpetshi Perricard, Giovanni | | Rinderknech, Arthur |
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| Germania (3) |
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| Altmaier, Daniel | | Hanfmann, Yannick | | Struff, Jan-Lennard |
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| Vacherot, Valentin |
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| Zandschulp, Botic van de |
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| Polonia (1) |
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| Hurkacz, Hubert |
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| Borges, Nuno |
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| Djokovic, Novak |
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| Svizzera (5) |
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| Bertola, Remy | | Brunold, Mika | | Kym, Jerome | | Stricker, Dominic | | Wawrinka, Stan |
| | Stati Uniti (4) |
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| Fritz, Taylor | | Kovacevic, Aleksandar | | Michelsen, Alex | | Shelton, Ben |
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