| Argentina (4) |
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| Bagnis, Facundo | | Coria, Federico | | Pella, Guido | | Schwartzman, Diego |
| | Austrálie (2) |
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| De Minaur, Alex | | Millman, John |
| | | Bulharsko (1) |
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| Dimitrov, Grigor |
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| Kanada (3) |
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| Auger-Aliassime, Felix | | Raonic, Milos | | Shapovalov, Denis |
| | Chile (1) |
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| Garin, Christian |
| | Chorvatsko (2) |
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| Cilic, Marin | | Coric, Borna |
| | Francie (4) |
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| Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Paire, Benoit |
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| Gruzie (1) |
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| Basilashvili, Nikoloz |
| | Německo (2) |
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| Koepfer, Dominik | | Struff, Jan-Lennard |
| | Řecko (1) |
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| Tsitsipas, Stefano |
| | Itálie (9) |
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| Berrettini, Matteo | | Caruso, Salvatore | | Cecchinato, Marco | | Fognini, Fabio | | Mager, Gianluca | | Musetti, Lorenzo | | Sinner, Jannik | | Sonego, Lorenzo | | Travaglia, Stefano |
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| Japonsko (2) |
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| Nishikori, Kei | | Nishioka, Yoshihito |
| | Kazachstán (1) |
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| Bublik, Alexander |
| | | Polsko (1) |
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| Hurkacz, Hubert |
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| Portugalsko (1) |
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| Sousa, Joao |
| | Rusko (2) |
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| Khachanov, Karen | | Rublev, Andrey |
| | Srbsko (4) |
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| Djokovic, Novak | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan |
| | Jihoafrická republika (1) |
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| Anderson, Kevin |
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| Španělsko (5) |
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| Carreno Busta, Pablo | | Davidovich Fokina, Alejandro | | Martinez, Pedro | | Nadal, Rafael | | Ramos-Vinolas, Albert |
| | Švýcarsko (1) |
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| Wawrinka, Stan |
| | Velká Británie (2) |
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| Edmund, Kyle | | Evans, Daniel |
| | USA (3) |
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| Fritz, Taylor | | Querrey, Sam | | Sandgren, Tennys |
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