| Аргентина (8) |
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| Baez, Sebastian | | Burruchaga, Roman Andres | | Cachin, Pedro | | Cerundolo, Francisco | | Coria, Federico | | Etcheverry, Tomas Martin | | Navone, Mariano | | Tirante, Thiago Agustin |
| | Австралия (9) |
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| De Minaur, Alex | | Hijikata, Rinky | | Kokkinakis, Thanasi | | O'Connell, Christopher | | Popyrin, Alexei | | Purcell, Max | | Thompson, Jordan | | Vukic, Aleksandar | | Walton, Adam |
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| Misolic, Filip | | Ofner, Sebastian |
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| Bergs, Zizou | | Goffin, David |
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| Dimitrov, Grigor |
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| Galan, Daniel Elahi |
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| Assche, Luca Van | | Atmane, Terence | | Barrere, Gregoire | | Cazaux, Arthur | | Fils, Arthur | | Gasquet, Richard | | Gaston, Hugo | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Lestienne, Constant | | Mannarino, Adrian | | Mayot, Harold | | Monfils, Gael | | Moutet, Corentin | | Mpetshi Perricard, Giovanni | | Muller, Alexandre | | Rinderknech, Arthur |
| | Германия (7) |
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| Altmaier, Daniel | | Hanfmann, Yannick | | Koepfer, Dominik | | Marterer, Maximilian | | Squire, Henri | | Struff, Jan-Lennard | | Zverev, Alexander |
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| Tsitsipas, Stefanos |
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| Kovalik, Jozef |
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| Kwon, Soonwoo |
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| Alcaraz, Carlos | | Bautista Agut, Roberto | | Carballes Baena, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Martinez, Pedro | | Munar, Jaume | | Nadal, Rafael |
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| Wawrinka, Stan |
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| Eubanks, Christopher | | Fritz, Taylor | | Giron, Marcos | | Korda, Sebastian | | Kovacevic, Aleksandar | | McDonald, Mackenzie | | Michelsen, Alex | | Moreno De Alboran, Nicolas | | Nakashima, Brandon | | Paul, Tommy | | Shelton, Ben | | Tiafoe, Frances | | Wolf, J.J. |
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