Australia (6) |
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Bolt, Alex | De Minaur, Alex | Duckworth, James | Kubler, Jason | Kyrgios, Nick | Thompson, Jordan |
| | | Bosnia-Herzegovina (1) |
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Basic, Mirza |
|
Canada (2) |
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Pospisil, Vasek | Shapovalov, Denis |
| Cyprus (1) |
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Baghdatis, Marcos |
| France (5) |
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Chardy, Jeremy | Herbert, Pierre-Hugues | Millot, Vincent | Paire, Benoit | Pouille, Lucas |
| Germany (2) |
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Zverev, Alexander | Zverev, Mischa |
|
Greece (1) |
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Tsitsipas, Stefano |
| Japan (3) |
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Nishikori, Kei | Sugita, Yuichi | Watanuki, Yosuke |
| Lithuania (1) |
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Berankis, Ricardas |
| Poland (1) |
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Hurkacz, Hubert |
|
| Russia (5) |
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Donskoy, Evgeny | Khachanov, Karen | Medvedev, Daniil | Rublev, Andrey | Youzhny, Mikhail |
| | South Korea (1) |
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Chung, Hyeon |
|
Switzerland (1) |
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Wawrinka, Stan |
| | United Kingdom (2) |
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Edmund, Kyle | Murray, Andy |
| United States (12) |
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Donaldson, Jared | Isner, John | Johnson, Steve | Krueger, Mitchell | Kudla, Denis | Kwiatkowski, Thai-Son | McDonald, Mackenzie | Paul, Tommy | Rubin, Noah | Smyczek, Tim | Tiafoe, Frances | Young, Donald |
|