| Argentina (2) |
|---|
| Del Potro, Juan Martin | | Schwartzman, Diego |
| | Australien (2) |
|---|
| Kyrgios, Nick | | Thompson, Jordan |
| | |
| Bosnien og Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Bulgarien (1) |
|---|
| Dimitrov, Grigor |
| | Canada (1) |
|---|
| Shapovalov, Denis |
| | Kina (3) |
|---|
| Wu, Di | | Wu, Yibing | | Zhang, Ze |
|
| Kroatien (2) |
|---|
| Cilic, Marin | | Karlovic, Ivo |
| | | Frankrig (6) |
|---|
| Chardy, Jeremy | | Gasquet, Richard | | Mannarino, Adrian | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles |
| | Georgien (1) |
|---|
| Basilashvili, Nikoloz |
|
| Tyskland (3) |
|---|
| Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| | Grækenland (1) |
|---|
| Tsitsipas, Stefano |
| | Italien (2) |
|---|
| Fognini, Fabio | | Lorenzi, Paolo |
| |
| | | Rusland (3) |
|---|
| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
| | Serbien (2) |
|---|
| Lajovic, Dusan | | Troicki, Viktor |
|
| Slovenien (1) |
|---|
| Bedene, Aljaz |
| | Sydafrika (1) |
|---|
| Anderson, Kevin |
| | | Spanien (6) |
|---|
| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Lopez, Feliciano | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
|
| Schweizisk (1) |
|---|
| Federer, Roger |
| | Ukraine (1) |
|---|
| Dolgopolov, Alexandr |
| | Storbritannien (1) |
|---|
| Edmund, Kyle |
| | USA (7) |
|---|
| Donaldson, Jared | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Querrey, Sam | | Sock, Jack | | Tiafoe, Frances |
|
|