| Argentinien (5) |
|---|
| Andreozzi, Guido | | Delbonis, Federico | | Mayer, Leonardo | | Pella, Guido | | Schwartzman, Diego |
| | Australien (5) |
|---|
| Ebden, Matthew | | Kyrgios, Nick | | Millman, John | | Thompson, Jordan | | Tomic, Bernard |
| | Österreich (1) |
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| Thiem, Dominic |
| | Weißrussland (1) |
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| Ivashka, Ilya |
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| | Bosnien und Herzegowina (1) |
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| Dzumhur, Damir |
| | Brasilien (1) |
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| Monteiro, Thiago |
| | Bulgarien (1) |
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| Dimitrov, Grigor |
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| Kanada (3) |
|---|
| Auger-Aliassime, Felix | | Raonic, Milos | | Shapovalov, Denis |
| | | Kroatien (3) |
|---|
| Cilic, Marin | | Coric, Borna | | Karlovic, Ivo |
| | Tschechien (1) |
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| Berdych, Tomas |
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| Frankreich (8) |
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| Chardy, Jeremy | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles |
| | Georgien (1) |
|---|
| Basilashvili, Nikoloz |
| | Deutschland (6) |
|---|
| Gojowczyk, Peter | | Kuhn, Nicola | | Marterer, Maximilian | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| | Griechenland (1) |
|---|
| Tsitsipas, Stefano |
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| Ungarn (1) |
|---|
| Fucsovics, Marton |
| | Indien (1) |
|---|
| Gunneswaran, Prajnesh |
| | Italien (5) |
|---|
| Berrettini, Matteo | | Cecchinato, Marco | | Fabbiano, Thomas | | Fognini, Fabio | | Sonego, Lorenzo |
| | Japan (2) |
|---|
| Daniel, Taro | | Nishikori, Kei |
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| Kasachstan (2) |
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| Bublik, Alexander | | Kukushkin, Mikhail |
| | Lettland (1) |
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| Gulbis, Ernests |
| | | Die Niederlande (1) |
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| Haase, Robin |
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| | | | Rumänien (1) |
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| Copil, Marius |
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| Russland (3) |
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| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
| | Serbien (5) |
|---|
| Djokovic, Novak | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan | | Tipsarevic, Janko |
| | Slowakei (2) |
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| Klizan, Martin | | Lacko, Lukas |
| | Slowenien (1) |
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| Bedene, Aljaz |
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| Südafrika (2) |
|---|
| Anderson, Kevin | | Harris, Lloyd |
| | Spanien (7) |
|---|
| Andujar, Pablo | | Bautista Agut, Roberto | | Carballes Baena, Roberto | | Ferrer, David | | Lopez, Feliciano | | Munar, Jaume | | Ramos-Vinolas, Albert |
| | | Schweiz (2) |
|---|
| Federer, Roger | | Wawrinka, Stan |
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| Taiwan (1) |
|---|
| Tseng, Chun-Hsin |
| | Tunesien (1) |
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| Jaziri, Malek |
| | Groß Britannien (3) |
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| Edmund, Kyle | | Evans, Daniel | | Norrie, Cameron |
| | Vereinigte Staaten (11) |
|---|
| Eubanks, Christopher | | Fritz, Taylor | | Isner, John | | Johnson, Steve | | Klahn, Bradley | | Kudla, Denis | | McDonald, Mackenzie | | Opelka, Reilly | | Querrey, Sam | | Sandgren, Tennys | | Tiafoe, Frances |
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