| Argentina (1) |
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| Mayer, Leonardo |
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| Ebden, Matthew | | Millman, John | | Popyrin, Alexei |
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| Shapovalov, Denis |
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| Cilic, Marin |
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| Gojowczyk, Peter | | Marterer, Maximilian | | Struff, Jan-Lennard | | Zverev, Alexander |
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| Tsitsipas, Stefano |
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| Cecchinato, Marco | | Seppi, Andreas |
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| Haase, Robin |
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| Sousa, Joao |
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| Bautista Agut, Roberto |
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| Federer, Roger | | Laaksonen, Henri | | Wawrinka, Stan |
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| Fritz, Taylor | | Harrison, Ryan | | Sock, Jack |
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