| l’Argentine (6) |
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| Delbonis, Federico | | Londero, Juan Ignacio | | Mayer, Leonardo | | Pella, Guido | | Schwartzman, Diego | | Trungelliti, Marco |
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| Bolt, Alex | | Duckworth, James | | Harris, Andrew | | Kyrgios, Nick | | Millman, John | | O'Connell, Christopher | | Polmans, Marc | | Popyrin, Alexei | | Purcell, Max | | Smith, John-Patrick | | Thompson, Jordan |
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| Auger-Aliassime, Felix | | Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
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| Safwat, Mohamed |
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| Barrere, Gregoire | | Chardy, Jeremy | | Gaston, Hugo | | Halys, Quentin | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Moutet, Corentin | | Paire, Benoit | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | la Géorgie (1) |
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| Basilashvili, Nikoloz |
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| l’Allemagne (6) |
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| Gojowczyk, Peter | | Koepfer, Dominik | | Kohlschreiber, Philipp | | Stebe, Cedrik-Marcel | | Struff, Jan-Lennard | | Zverev, Alexander |
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| Kwon, Soonwoo |
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| l’Espagne (12) |
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| Andujar, Pablo | | Bautista Agut, Roberto | | Carballes Baena, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Lopez, Feliciano | | Martinez, Pedro | | Munar, Jaume | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Verdasco, Fernando | | Vilella Martinez, Mario |
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| | l’Uruguay (1) |
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| Cuevas, Pablo |
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