| Argentina (2) |
|---|
| Delbonis, Federico | | Schwartzman, Diego |
| | | Bulgarien (1) |
|---|
| Dimitrov, Grigor |
| | Canada (2) |
|---|
| Auger-Aliassime, Felix | | Shapovalov, Denis |
|
| Danmark (1) |
|---|
| Holmgren, August |
| | Georgien (1) |
|---|
| Basilashvili, Nikoloz |
| | Tyskland (1) |
|---|
| Koepfer, Dominik |
| | Ungarn (1) |
|---|
| Fucsovics, Marton |
|
| Italien (4) |
|---|
| Caruso, Salvatore | | Fognini, Fabio | | Gaio, Federico | | Sonego, Lorenzo |
| | | |
| Rusland (2) |
|---|
| Karatsev, Aslan | | Rublev, Andrey |
| | Sydafrika (2) |
|---|
| Anderson, Kevin | | Harris, Lloyd |
| | Sydkorea (1) |
|---|
| Kwon, Soonwoo |
| | Storbritannien (3) |
|---|
| Evans, Daniel | | Murray, Andy | | Norrie, Cameron |
|
| USA (6) |
|---|
| Eubanks, Christopher | | Fritz, Taylor | | Korda, Sebastian | | Kudla, Denis | | Nakashima, Brandon | | Paul, Tommy |
|