| Australia (1) |
|---|
| Duckworth, James |
| | Belarus (2) |
|---|
| Gerasimov, Egor | | Ivashka, Ilya |
| | Canada (3) |
|---|
| Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
| | Croatia (2) |
|---|
| Coric, Borna | | Serdarusic, Nino |
|
| | France (3) |
|---|
| Gasquet, Richard | | Humbert, Ugo | | Mannarino, Adrian |
| | Kazakhstan (2) |
|---|
| Bublik, Alexander | | Kukushkin, Mikhail |
| | Russia (7) |
|---|
| Donskoy, Evgeny | | Karatsev, Aslan | | Khachanov, Karen | | Kotov, Pavel | | Medvedev, Daniil | | Rublev, Andrey | | Safiullin, Roman |
|
| Serbia (2) |
|---|
| Kecmanovic, Miomir | | Troicki, Viktor |
| | Spain (1) |
|---|
| Lopez, Feliciano |
| | Switzerland (1) |
|---|
| Wawrinka, Stan |
| | United Kingdom (2) |
|---|
| Evans, Daniel | | Norrie, Cameron |
|
| United States (6) |
|---|
| Fritz, Taylor | | McDonald, Mackenzie | | Opelka, Reilly | | Querrey, Sam | | Sandgren, Tennys | | Wolf, J.J. |
|