| Argentina (2) |
|---|
| Etcheverry, Tomas Martin | | Navone, Mariano |
| | Australia (5) |
|---|
| Duckworth, James | | Hijikata, Rinky | | Kokkinakis, Thanasi | | Popyrin, Alexei | | Thompson, Jordan |
| | Bulgaria (1) |
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| Dimitrov, Grigor |
| | Canada (5) |
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| Auger-Aliassime, Felix | | Diallo, Gabriel | | Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
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| Chile (2) |
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| Jarry, Nicolas | | Tabilo, Alejandro |
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| Machac, Tomas |
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| Fils, Arthur | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Rinderknech, Arthur |
| | Tyskland (1) |
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| Zverev, Alexander |
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| Marozsan, Fabian |
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| Italia (5) |
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| Daniel, Taro | | Nishikori, Kei |
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| Bublik, Alexander |
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| Griekspoor, Tallon |
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| | | | Russland (4) |
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| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey | | Safiullin, Roman |
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| Serbia (1) |
|---|
| Kecmanovic, Miomir |
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| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Martinez, Pedro |
| | England (2) |
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| Draper, Jack | | Norrie, Cameron |
| | Amerika (9) |
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| Fritz, Taylor | | Giron, Marcos | | Korda, Sebastian | | McDonald, Mackenzie | | Michelsen, Alex | | Nakashima, Brandon | | Paul, Tommy | | Shelton, Ben | | Tiafoe, Frances |
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