| Argentina (3) |
|---|
| Delbonis, Federico | | Monaco, Juan | | Schwartzman, Diego |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Brasile (1) |
|---|
| Bellucci, Thomaz |
| | Colombia (3) |
|---|
| Falla, Alejandro | | Giraldo, Santiago | | Gonzalez, Alejandro |
|
| | Repubblica Ceca (1) |
|---|
| Vesely, Jiri |
| | Francia (3) |
|---|
| De Schepper, Kenny | | Mannarino, Adrian | | Pouille, Lucas |
| | Germania (1) |
|---|
| Struff, Jan-Lennard |
|
| | | Lettonia (1) |
|---|
| Gulbis, Ernests |
| | Nuova Zelanda (2) |
|---|
| Statham, Jose | | Venus, Michael |
|
| Portogallo (1) |
|---|
| Sousa, Joao |
| | Sud Africa (1) |
|---|
| Anderson, Kevin |
| | Spagna (4) |
|---|
| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Garcia-Lopez, Guillermo | | Ramos-Vinolas, Albert |
| |
| Stati Uniti (2) |
|---|
| Johnson, Steve | | Young, Donald |
|