| Argentina (1) |
|---|
| Del Potro, Juan Martin |
| | Australien (4) |
|---|
| Aiava, Destanee | | De Minaur, Alex | | Kokkinakis, Thanasi | | Tomljanovic, Ajla |
| | | Kroatien (1) |
|---|
| Lucic-Baroni, Mirjana |
|
| Tjekkiet (4) |
|---|
| Berdych, Tomas | | Kvitova, Petra | | Pliskova, Kristyna | | Safarova, Lucie |
| | Tyskland (2) |
|---|
| Petkovic, Andrea | | Zverev, Mischa |
| | Italien (1) |
|---|
| Sonego, Lorenzo |
| |
| Polen (1) |
|---|
| Radwanska, Agnieszka |
| | Rumænien (1) |
|---|
| Halep, Simona |
| | Rusland (1) |
|---|
| Medvedev, Daniil |
| | Serbien (1) |
|---|
| Djokovic, Novak |
|
| | Spanien (4) |
|---|
| Bautista Agut, Roberto | | Lopez, Feliciano | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| | USA (6) |
|---|
| Donaldson, Jared | | Keys, Madison | | Querrey, Sam | | Rogers, Shelby | | Tiafoe, Frances | | Young, Donald |
|