| Argentina (2) |
|---|
| Berlocq, Carlos | | Delbonis, Federico |
| | Austria (1) |
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| Thiem, Dominic |
| | | Bulgaria (1) |
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| Dimitrov, Grigor |
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| Canada (2) |
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| Pospisil, Vasek | | Raonic, Milos |
| | Croatia (3) |
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| Coric, Borna | | Dodig, Ivan | | Karlovic, Ivo |
| | Czech Republic (1) |
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| Rosol, Lukas |
| | Finland (1) |
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| Nieminen, Jarkko |
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| France (3) |
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| De Schepper, Kenny | | Herbert, Pierre-Hugues | | Roger-Vasselin, Edouard |
| | Germany (2) |
|---|
| Becker, Benjamin | | Zverev, Alexander |
| | | Kazakhstan (2) |
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| Golubev, Andrey | | Kukushkin, Mikhail |
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| Russia (1) |
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| | | Switzerland (3) |
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| Chiudinelli, Marco | | Federer, Roger | | Wawrinka, Stan |
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| Johnson, Steve | | Young, Donald |
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| Uzbekistan (1) |
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| Istomin, Denis |
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