| Australien (1) |
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| Tomic, Bernard |
| | Hviderusland (1) |
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| Sasnovich, Aliaksandra |
| | Belgien (2) |
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| Flipkens, Kirsten | | Uytvanck, Alison Van |
| | Bosnien og Herzegovina (1) |
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| Dzumhur, Damir |
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| | Tjekkiet (4) |
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| Berdych, Tomas | | Kvitova, Petra | | Siniakova, Katerina | | Strycova, Barbora |
| | Danmark (1) |
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| Wozniacki, Caroline |
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| Monfils, Gael |
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| Grækenland (1) |
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| Sakkari, Maria |
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| Seppi, Andreas |
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| Ostapenko, Jelena |
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| Bertens, Kiki | | Haase, Robin |
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| Rybarikova, Magdalena |
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| Spanien (2) |
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| Bautista Agut, Roberto | | Garcia-Lopez, Guillermo |
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|---|
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|---|
| Edmund, Kyle | | Murray, Andy |
| | USA (2) |
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| Johnson, Steve | | Riske, Alison |
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| Usbekistan (1) |
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| Istomin, Denis |
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