| Argentina (1) |
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| Comesana, Francisco |
| | Australia (2) |
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| Duckworth, James | | Vukic, Aleksandar |
| | |
| Tsjekkisk Republikk (1) |
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| Mensik, Jakub |
| | Frankrike (3) |
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| Halys, Quentin | | Humbert, Ugo | | Mpetshi Perricard, Giovanni |
| | Ungarn (1) |
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| Marozsan, Fabian |
| | Italia (4) |
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| Bellucci, Mattia | | Cobolli, Flavio | | Darderi, Luciano | | Sonego, Lorenzo |
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| Kazakhstan (1) |
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| Bublik, Alexander |
| | | Serbia (1) |
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| Kecmanovic, Miomir |
| | Spania (1) |
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| Davidovich Fokina, Alejandro |
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| Taiwan (1) |
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| Tseng, Chun-Hsin |
| | England (6) |
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| Evans, Daniel | | Fearnley, Jacob | | Harris, Billy | | Loffhagen, George | | Norrie, Cameron | | Pinnington Jones, Jack |
| | Amerika (5) |
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| Brooksby, Jenson | | Fritz, Taylor | | Giron, Marcos | | Opelka, Reilly | | Paul, Tommy |
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