| Argentinië (3) |
|---|
| Delbonis, Federico | | Londero, Juan Ignacio | | Mayer, Leonardo |
| | Oostenrijk (1) |
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| Thiem, Dominic |
| | | Brazilië (1) |
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| Monteiro, Thiago |
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| Chili (2) |
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| Garin, Christian | | Jarry, Nicolas |
| | Frankrijk (3) |
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| Chardy, Jeremy | | Gasquet, Richard | | Paire, Benoit |
| | Georgië (1) |
|---|
| Basilashvili, Nikoloz |
| | Duitsland (7) |
|---|
| Altmaier, Daniel | | Hanfmann, Yannick | | Kohlschreiber, Philipp | | Lenz, Julian | | Molleker, Rudolf | | Struff, Jan-Lennard | | Zverev, Alexander |
|
| Hongarije (1) |
|---|
| Fucsovics, Marton |
| | | Italië (3) |
|---|
| Caruso, Salvatore | | Cecchinato, Marco | | Fognini, Fabio |
| | Nederland (1) |
|---|
| Haase, Robin |
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| Noorwegen (1) |
|---|
| Ruud, Casper |
| | Rusland (1) |
|---|
| Rublev, Andrey |
| | Servië (2) |
|---|
| Djere, Laslo | | Krajinovic, Filip |
| | Slowakije (1) |
|---|
| Klizan, Martin |
|
| Spanje (2) |
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| Carreno Busta, Pablo | | Davidovich Fokina, Alejandro |
| |