| Argentina (2) |
|---|
| Mayer, Leonardo | | Pella, Guido |
| | Australien (1) |
|---|
| Popyrin, Alexei |
| | |
| Kroatien (1) |
|---|
| Karlovic, Ivo |
| | Tjekkiet (1) |
|---|
| Pliskova, Karolina |
| | Danmark (1) |
|---|
| Wozniacki, Caroline |
| | Estland (1) |
|---|
| Kontaveit, Anett |
|
| Frankrig (2) |
|---|
| Chardy, Jeremy | | Paire, Benoit |
| | Italien (2) |
|---|
| Fabbiano, Thomas | | Seppi, Andreas |
| | Letland (1) |
|---|
| Sevastova, Anastasija |
| |
| | Puerto Rico (1) |
|---|
| Puig, Monica |
| | Rusland (4) |
|---|
| Gasparyan, Margarita | | Khachanov, Karen | | Kudermetova, Veronika | | Medvedev, Daniil |
| | Serbien (1) |
|---|
| Kecmanovic, Miomir |
|
| Slovakiet (1) |
|---|
| Rybarikova, Magdalena |
| | Spanien (2) |
|---|
| Lopez, Feliciano | | Verdasco, Fernando |
| | Ukraine (2) |
|---|
| Svitolina, Elina | | Yastremska, Dayana |
| | Storbritannien (2) |
|---|
| Edmund, Kyle | | Watson, Heather |
|
| USA (3) |
|---|
| Collins, Danielle | | Gauff, Cori | | Kenin, Sofia |
|