| Australia (2) |
|---|
| Millman, John | | Tomic, Bernard |
| | Canada (3) |
|---|
| Auger-Aliassime, Felix | | Diez, Steven | | Shapovalov, Denis |
| | Repubblica Ceca (1) |
|---|
| Vesely, Jiri |
| | Francia (9) |
|---|
| Chardy, Jeremy | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Janvier, Maxime | | Lamasine, Tristan | | Moutet, Corentin | | Paire, Benoit | | Tsonga, Jo-Wilfried |
|
| Georgia (1) |
|---|
| Basilashvili, Nikoloz |
| | | Kazakistan (1) |
|---|
| Kukushkin, Mikhail |
| | Polonia (1) |
|---|
| Hurkacz, Hubert |
|
| | Slovacchia (1) |
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| Klizan, Martin |
| | Sud Africa (1) |
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| Harris, Lloyd |
| | Spagna (2) |
|---|
| Andujar, Pablo | | Bautista Agut, Roberto |
|
| Regno Unito (1) |
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| Norrie, Cameron |
| | Stati Uniti (4) |
|---|
| Fritz, Taylor | | Johnson, Steve | | McDonald, Mackenzie | | Opelka, Reilly |
| |