| Argentinië (3) |
|---|
| Coria, Federico | | Delbonis, Federico | | Schwartzman, Diego |
| | Australië (6) |
|---|
| De Minaur, Alex | | Duckworth, James | | Kokkinakis, Thanasi | | O'Connell, Christopher | | Popyrin, Alexei | | Thompson, Jordan |
| | Wit-Rusland (1) |
|---|
| Ivashka, Ilya |
| |
| Bosnië-Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Brazilië (2) |
|---|
| Monteiro, Thiago | | Seyboth Wild, Thiago |
| | Bulgarije (1) |
|---|
| Dimitrov, Grigor |
| | Canada (4) |
|---|
| Auger-Aliassime, Felix | | Pospisil, Vasek | | Raonic, Milos | | Shapovalov, Denis |
|
| Chili (2) |
|---|
| Garin, Christian | | Tabilo, Alejandro |
| | Colombia (1) |
|---|
| Galan, Daniel Elahi |
| | |
| Finland (1) |
|---|
| Ruusuvuori, Emil |
| | Frankrijk (6) |
|---|
| Chardy, Jeremy | | Gaston, Hugo | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mannarino, Adrian | | Paire, Benoit |
| | Georgië (1) |
|---|
| Basilashvili, Nikoloz |
| | Duitsland (5) |
|---|
| Hanfmann, Yannick | | Koepfer, Dominik | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
|
| Griekenland (1) |
|---|
| Tsitsipas, Stefano |
| | Hongarije (1) |
|---|
| Fucsovics, Marton |
| | Italië (9) |
|---|
| Caruso, Salvatore | | Fabbiano, Thomas | | Fognini, Fabio | | Gaio, Federico | | Lorenzi, Paolo | | Musetti, Lorenzo | | Sinner, Jannik | | Sonego, Lorenzo | | Travaglia, Stefano |
| | Japan (4) |
|---|
| Mochizuki, Shintaro | | Nishikori, Kei | | Nishioka, Yoshihito | | Uchiyama, Yasutaka |
|
| Kazachstan (2) |
|---|
| Bublik, Alexander | | Kukushkin, Mikhail |
| | Litouwen (1) |
|---|
| Berankis, Ricardas |
| | Mexico (1) |
|---|
| Escobedo, Ernesto |
| |
| | Portugal (2) |
|---|
| Sousa, Joao | | Sousa, Pedro |
| | Rusland (4) |
|---|
| Karatsev, Aslan | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
| | Servië (3) |
|---|
| Djere, Laslo | | Kecmanovic, Miomir | | Lajovic, Dusan |
|
| Slovenië (1) |
|---|
| Bedene, Aljaz |
| | Zuid-Afrika (2) |
|---|
| Anderson, Kevin | | Harris, Lloyd |
| | Zuid-Korea (1) |
|---|
| Kwon, Soonwoo |
| | Spanje (5) |
|---|
| Alcaraz, Carlos | | Bautista Agut, Roberto | | Lopez, Feliciano | | Martinez, Pedro | | Verdasco, Fernando |
|
| | | Verenigd Koninkrijk (4) |
|---|
| Broady, Liam | | Draper, Jack | | Evans, Daniel | | Norrie, Cameron |
| | Verenigde Staten (15) |
|---|
| Fratangelo, Bjorn | | Fritz, Taylor | | Giron, Marcos | | Isner, John | | Johnson, Steve | | Korda, Sebastian | | Kudla, Denis | | McDonald, Mackenzie | | Mmoh, Michael | | Nava, Emilio | | Opelka, Reilly | | Paul, Tommy | | Querrey, Sam | | Sandgren, Tennys | | Tiafoe, Frances |
|