Argentina (1) |
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Schwartzman, Diego |
| Australia (3) |
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De Minaur, Alex | Ebden, Matthew | Kyrgios, Nick |
| Bosnia-Herzegovina (1) |
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Dzumhur, Damir |
| Canada (2) |
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Raonic, Milos | Shapovalov, Denis |
|
| | France (5) |
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Chardy, Jeremy | Gasquet, Richard | Mannarino, Adrian | Paire, Benoit | Simon, Gilles |
| Germany (2) |
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Marterer, Maximilian | Struff, Jan-Lennard |
|
Greece (1) |
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Tsitsipas, Stefano |
| Japan (5) |
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Daniel, Taro | Nishikori, Kei | Nishioka, Yoshihito | Sugita, Yuichi | Watanuki, Yosuke |
| Netherlands (1) |
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Haase, Robin |
| Russia (1) |
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Medvedev, Daniil |
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Slovakia (1) |
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Klizan, Martin |
| South Africa (1) |
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Anderson, Kevin |
| South Korea (1) |
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Chung, Hyeon |
| Switzerland (1) |
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Wawrinka, Stan |
|
United States (4) |
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Fritz, Taylor | Johnson, Steve | Kudla, Denis | Tiafoe, Frances |
|