| Argentina (1) |
|---|
| Del Potro, Juan Martin |
| | Australia (4) |
|---|
| Aiava, Destanee | | De Minaur, Alex | | Kokkinakis, Thanasi | | Tomljanovic, Ajla |
| | | Croatia (1) |
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| Lucic-Baroni, Mirjana |
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| Czech Republic (4) |
|---|
| Berdych, Tomas | | Kvitova, Petra | | Pliskova, Kristyna | | Safarova, Lucie |
| | Germany (2) |
|---|
| Petkovic, Andrea | | Zverev, Mischa |
| | | Netherlands (1) |
|---|
| Haase, Robin |
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| Poland (1) |
|---|
| Radwanska, Agnieszka |
| | | Russia (1) |
|---|
| Medvedev, Daniil |
| | Serbia (1) |
|---|
| Djokovic, Novak |
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| South Korea (1) |
|---|
| Chung, Hyeon |
| | Spain (4) |
|---|
| Bautista Agut, Roberto | | Lopez, Feliciano | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| | United States (6) |
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| Donaldson, Jared | | Keys, Madison | | Querrey, Sam | | Rogers, Shelby | | Tiafoe, Frances | | Young, Donald |
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