| Argentina (1) |
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| Delbonis, Federico |
| | Austria (3) |
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| Erler, Alexander | | Neumayer, Lukas | | Novak, Dennis |
| | Brasil (1) |
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| Seyboth Wild, Thiago |
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| Vesely, Jiri |
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| Rune, Holger Vitus Nodskov |
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| Pouille, Lucas | | Rinderknech, Arthur |
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| Altmaier, Daniel |
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| Cecchinato, Marco | | Mager, Gianluca | | Travaglia, Stefano |
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| Gulbis, Ernests |
| | | | Serbia (2) |
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| Djere, Laslo | | Krajinovic, Filip |
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| Kovalik, Jozef |
| | España (7) |
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| Alcaraz, Carlos | | Bautista Agut, Roberto | | Martinez, Pedro | | Munar, Jaume | | Ramos-Vinolas, Albert | | Taberner, Carlos | | Vilella Martinez, Mario |
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