| Argentina (5) |
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| Baez, Sebastian | | Cerundolo, Francisco | | Comesana, Francisco | | Diaz Acosta, Facundo | | Trungelliti, Marco |
| | Australia (1) |
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| Popyrin, Alexei |
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| Ofner, Sebastian |
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| Brasil (2) |
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| Meligeni Alves, Felipe | | Seyboth Wild, Thiago |
| | | | Dominikansk Republikk (1) |
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| Hardt, Nick |
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| Blanchet, Ugo | | Fils, Arthur | | Gaston, Hugo |
| | Tyskland (6) |
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| Altmaier, Daniel | | Koepfer, Dominik | | Marterer, Maximilian | | Molleker, Rudolf | | Squire, Henri | | Zverev, Alexander |
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| Marozsan, Fabian |
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| Arnaldi, Matteo | | Cobolli, Flavio | | Darderi, Luciano | | Sonego, Lorenzo |
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| Shevchenko, Alexander |
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| Jong, Jesper de |
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| Kwon, Soonwoo |
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| Martinez, Pedro | | Munar, Jaume |
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