| Argentina (3) |
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| Baez, Sebastian | | Delbonis, Federico | | Schwartzman, Diego |
| | Australia (1) |
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| De Minaur, Alex |
| | Bielorussia (1) |
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| Ivashka, Ilya |
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| Dimitrov, Grigor |
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| Auger-Aliassime, Felix |
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| Croazia (2) |
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| Cilic, Marin | | Coric, Borna |
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| Lehecka, Jiri |
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| Rune, Holger |
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| Ruusuvuori, Emil |
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| Francia (5) |
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| Bonzi, Benjamin | | Humbert, Ugo | | Paire, Benoit | | Rinderknech, Arthur | | Tsonga, Jo-Wilfried |
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| Basilashvili, Nikoloz |
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| Otte, Oscar | | Zverev, Alexander |
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| Tsitsipas, Stefanos |
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| Fucsovics, Marton |
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| Fognini, Fabio | | Musetti, Lorenzo | | Sinner, Jannik | | Sonego, Lorenzo |
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| Bublik, Alexander |
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| Catarina, Lucas |
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| Hurkacz, Hubert |
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| Karatsev, Aslan | | Khachanov, Karen | | Rublev, Andrey |
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| Serbia (4) |
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| Djere, Laslo | | Djokovic, Novak | | Krajinovic, Filip | | Lajovic, Dusan |
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| Harris, Lloyd |
| | Spagna (8) |
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| Alcaraz, Carlos | | Bautista Agut, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Martinez, Pedro | | Munar, Jaume | | Ramos-Vinolas, Albert | | Zapata Miralles, Bernabe |
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| Wawrinka, Stan |
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| Evans, Daniel | | Norrie, Cameron |
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| Cressy, Maxime | | Fritz, Taylor | | Giron, Marcos | | Korda, Sebastian |
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