| Argentinien (2) |
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| Del Potro, Juan Martin | | Schwartzman, Diego |
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| Kyrgios, Nick |
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| Thiem, Dominic |
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| Dimitrov, Grigor |
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| Polansky, Peter | | Pospisil, Vasek | | Raonic, Milos | | Schnur, Brayden | | Shapovalov, Denis |
| |
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| Berdych, Tomas |
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| Gasquet, Richard | | Herbert, Pierre-Hugues | | Mannarino, Adrian | | Millot, Vincent | | Monfils, Gael | | Paire, Benoit | | Pouille, Lucas | | Tsonga, Jo-Wilfried |
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| Basilashvili, Nikoloz |
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| Escobedo, Ernesto |
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| Haase, Robin |
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| Khachanov, Karen | | Medvedev, Daniil | | Youzhny, Mikhail |
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| Anderson, Kevin |
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| Federer, Roger |
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| Groß Britannien (1) |
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| Edmund, Kyle |
| | Vereinigte Staaten (10) |
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| Donaldson, Jared | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Opelka, Reilly | | Querrey, Sam | | Smyczek, Tim | | Sock, Jack | | Tiafoe, Frances | | Young, Donald |
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