| Австралия (1) |
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| Duckworth, James |
| | Беларусь (2) |
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| Gerasimov, Egor | | Ivashka, Ilya |
| | Канада (3) |
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| Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
| | Хорватия (2) |
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| Coric, Borna | | Serdarusic, Nino |
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| | Франция (3) |
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| Gasquet, Richard | | Humbert, Ugo | | Mannarino, Adrian |
| | Казахстан (2) |
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| Bublik, Alexander | | Kukushkin, Mikhail |
| | Россия (7) |
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| Donskoy, Evgeny | | Karatsev, Aslan | | Khachanov, Karen | | Kotov, Pavel | | Medvedev, Daniil | | Rublev, Andrey | | Safiullin, Roman |
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| Сербия (2) |
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| Kecmanovic, Miomir | | Troicki, Viktor |
| | Испания (1) |
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| Lopez, Feliciano |
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| Wawrinka, Stan |
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| Evans, Daniel | | Norrie, Cameron |
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| Соединенные Штаты (6) |
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| Fritz, Taylor | | McDonald, Mackenzie | | Opelka, Reilly | | Querrey, Sam | | Sandgren, Tennys | | Wolf, J.J. |
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