| Argentina (4) |
|---|
| Berlocq, Carlos | | Delbonis, Federico | | Mayer, Leonardo | | Monaco, Juan |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | Brasile (1) |
|---|
| Bellucci, Thomaz |
| | Colombia (1) |
|---|
| Giraldo, Santiago |
|
| | Repubblica Ceca (2) |
|---|
| Rosol, Lukas | | Vesely, Jiri |
| | Finlandia (1) |
|---|
| Nieminen, Jarkko |
| | Francia (3) |
|---|
| De Schepper, Kenny | | Paire, Benoît | | Simon, Gilles |
|
| Germania (7) |
|---|
| Brown, Dustin | | Gojowczyk, Peter | | Kamke, Tobias | | Kohlschreiber, Philipp | | Reister, Julian | | Struff, Jan-Lennard | | Zverev, Alexander |
| | Italia (2) |
|---|
| Fognini, Fabio | | Seppi, Andreas |
| | Kazakistan (2) |
|---|
| Golubev, Andrey | | Kukushkin, Mikhail |
| | Olanda (2) |
|---|
| Haase, Robin | | Sijsling, Igor |
|
| Polonia (1) |
|---|
| Janowicz, Jerzy |
| | Portogallo (2) |
|---|
| Elias, Gastao | | Sousa, Joao |
| | Russia (2) |
|---|
| Gabashvili, Teymuraz | | Youzhny, Mikhail |
| | Serbia (2) |
|---|
| Krajinovic, Filip | | Lajovic, Dusan |
|
| Slovacchia (1) |
|---|
| Klizan, Martin |
| | Spagna (11) |
|---|
| Andujar, Pablo | | Carreño Busta, Pablo | | Ferrer, David | | Garcia-Lopez, Guillermo | | Gimeno-Traver, Daniel | | Granollers, Marcel | | Montanes, Albert | | Ramos-Vinolas, Albert | | Riba, Pere | | Robredo, Tommy | | Verdasco, Fernando |
| | | Ucraina (1) |
|---|
| Dolgopolov, Alexandr |
|