| Argentina (1) |
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| Del Potro, Juan Martin |
| | Austria (1) |
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| Thiem, Dominic |
| | Bulgaria (1) |
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| Dimitrov, Grigor |
| | Croazia (2) |
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| Cilic, Marin | | Dodig, Ivan |
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| Repubblica Ceca (2) |
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| Berdych, Tomas | | Rosol, Lukas |
| | Finlandia (1) |
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| Nieminen, Jarkko |
| | Francia (7) |
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| Benneteau, Julien | | Gasquet, Richard | | Mahut, Nicolas | | Mathieu, Paul-Henri | | Monfils, Gael | | Roger-Vasselin, Edouard | | Tsonga, Jo-Wilfried |
| | Germania (5) |
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| Berrer, Michael | | Brands, Daniel | | Haas, Tommy | | Kohlschreiber, Philipp | | Mayer, Florian |
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| | Lettonia (1) |
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| Gulbis, Ernests |
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| Bakker, Thiemo de | | Huta Galung, Jesse | | Sijsling, Igor |
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| Janowicz, Jerzy |
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| Russia (2) |
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| Tursunov, Dmitry | | Youzhny, Mikhail |
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| Verdasco, Fernando |
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| Stakhovsky, Sergiy |
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| Murray, Andy |
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| Usbechistan (1) |
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| Istomin, Denis |
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