| Argentinien (2) |
|---|
| Pella, Guido | | Schwartzman, Diego |
| | Österreich (2) |
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| Novak, Dennis | | Thiem, Dominic |
| | Bosnien und Herzegowina (1) |
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| Dzumhur, Damir |
| | Bulgarien (1) |
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| Dimitrov, Grigor |
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| Kanada (3) |
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| Auger-Aliassime, Felix | | Raonic, Milos | | Shapovalov, Denis |
| | | Frankreich (5) |
|---|
| Herbert, Pierre-Hugues | | Mannarino, Adrian | | Monfils, Gael | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Georgien (1) |
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| Basilashvili, Nikoloz |
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| Deutschland (1) |
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| Kohlschreiber, Philipp |
| | Ungarn (1) |
|---|
| Fucsovics, Marton |
| | Italien (3) |
|---|
| Berrettini, Matteo | | Sinner, Jannik | | Sonego, Lorenzo |
| | Kasachstan (2) |
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| Bublik, Alexander | | Kukushkin, Mikhail |
|
| | Russland (2) |
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| Khachanov, Karen | | Rublev, Andrey |
| | Slowenien (1) |
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| Bedene, Aljaz |
| |
| Spanien (3) |
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| Carreno Busta, Pablo | | Lopez, Feliciano | | Verdasco, Fernando |
| | Groß Britannien (1) |
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| Edmund, Kyle |
| | Vereinigte Staaten (1) |
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| Querrey, Sam |
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