| Argentina (1) |
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| Coria, Federico |
| | Australia (1) |
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| De Minaur, Alex |
| | Belgio (3) |
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| Bergs, Zizou | | Coppejans, Kimmer | | Goffin, David |
| | Bulgaria (1) |
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| Dimitrov, Grigor |
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| | Finlandia (1) |
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| Ruusuvuori, Emil |
| | Francia (3) |
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| Gasquet, Richard | | Humbert, Ugo | | Moutet, Corentin |
| | Italia (2) |
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| Caruso, Salvatore | | Nardi, Luca |
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| Russia (1) |
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| Khachanov, Karen |
| | | Slovenia (1) |
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| Bedene, Aljaz |
| | Sud Africa (1) |
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| Harris, Lloyd |
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| Spagna (4) |
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| Andujar, Pablo | | Carreno Busta, Pablo | | Lopez, Feliciano | | Ramos-Vinolas, Albert |
| | Regno Unito (2) |
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| Evans, Daniel | | Norrie, Cameron |
| | Stati Uniti (5) |
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| Fritz, Taylor | | Giron, Marcos | | Opelka, Reilly | | Paul, Tommy | | Tiafoe, Frances |
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