| Argentina (2) |
|---|
| Del Potro, Juan Martin | | Schwartzman, Diego |
| | Australien (2) |
|---|
| Ebden, Matthew | | Kokkinakis, Thanasi |
| | | Canada (1) |
|---|
| Shapovalov, Denis |
|
| Frankrig (1) |
|---|
| Mannarino, Adrian |
| | Georgien (1) |
|---|
| Basilashvili, Nikoloz |
| | Tyskland (3) |
|---|
| Gojowczyk, Peter | | Zverev, Alexander | | Zverev, Mischa |
| | Japan (2) |
|---|
| Daniel, Taro | | Nishikori, Kei |
|
| Kasakhstan (1) |
|---|
| Bublik, Alexander |
| | Litauen (1) |
|---|
| Berankis, Ricardas |
| | Mexico (2) |
|---|
| Escobedo, Ernesto | | Gomez, Lucas |
| |
| Rusland (1) |
|---|
| Rublev, Andrey |
| | Sydafrika (1) |
|---|
| Anderson, Kevin |
| | | Spanien (4) |
|---|
| Ferrer, David | | Lopez, Feliciano | | Nadal, Rafael | | Verdasco, Fernando |
|
| Storbritannien (1) |
|---|
| Norrie, Cameron |
| | USA (8) |
|---|
| Donaldson, Jared | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | McDonald, Mackenzie | | Querrey, Sam | | Sock, Jack | | Young, Donald |
|