| Austria (1) |
|---|
| Thiem, Dominic |
| | | Bulgaria (1) |
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| Dimitrov, Grigor |
| | Canada (2) |
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| Pospisil, Vasek | | Raonic, Milos |
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| Czech Republic (2) |
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| Berdych, Tomas | | Rosol, Lukas |
| | France (7) |
|---|
| Benneteau, Julien | | Chardy, Jeremy | | Mahut, Nicolas | | Mathieu, Paul-Henri | | Monfils, Gael | | Roger-Vasselin, Edouard | | Simon, Gilles |
| | Germany (3) |
|---|
| Kamke, Tobias | | Kohlschreiber, Philipp | | Zverev, Alexander |
| | Italy (2) |
|---|
| Bolelli, Simone | | Seppi, Andreas |
|
| Latvia (1) |
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| Gulbis, Ernests |
| | Luxembourg (1) |
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| Muller, Gilles |
| | Netherlands (2) |
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| Haase, Robin | | Huta Galung, Jesse |
| |
| Russia (1) |
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| Kuznetsov, Andrey |
| | Spain (3) |
|---|
| Bautista Agut, Roberto | | Garcia-Lopez, Guillermo | | Granollers, Marcel |
| | Switzerland (1) |
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| Wawrinka, Stan |
| | Ukraine (1) |
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| Stakhovsky, Sergiy |
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| United Kingdom (1) |
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| Murray, Andy |
| | Uzbekistan (1) |
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| Istomin, Denis |
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