| Argentina (3) |
|---|
| Bagnis, Facundo | | Cerundolo, Juan Manuel | | Etcheverry, Tomas Martin |
| | Australia (4) |
|---|
| Kubler, Jason | | Purcell, Max | | Thompson, Jordan | | Vukic, Aleksandar |
| | |
| Chile (1) |
|---|
| Garin, Christian |
| | | Colombia (1) |
|---|
| Galan, Daniel Elahi |
| | Czech Republic (1) |
|---|
| Machac, Tomas |
|
| | Germany (2) |
|---|
| Altmaier, Daniel | | Hanfmann, Yannick |
| | Japan (1) |
|---|
| Watanuki, Yosuke |
| | Netherlands (1) |
|---|
| Brouwer, Gijs |
|
| Spain (1) |
|---|
| Verdasco, Fernando |
| | United States (10) |
|---|
| Giron, Marcos | | Isner, John | | Johnson, Steve | | Kovacevic, Aleksandar | | Kudla, Denis | | Nakashima, Brandon | | Paul, Tommy | | Sock, Jack | | Tiafoe, Frances | | Wolf, J.J. |
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