| Argentina (5) |
|---|
| Andreozzi, Guido | | Delbonis, Federico | | Mayer, Leonardo | | Pella, Guido | | Schwartzman, Diego |
| | Australien (7) |
|---|
| Bolt, Alex | | De Minaur, Alex | | Ebden, Matthew | | Kyrgios, Nick | | Millman, John | | Popyrin, Alexei | | Thompson, Jordan |
| | | Hviderusland (1) |
|---|
| Ivashka, Ilya |
|
| | Bosnien og Herzegovina (1) |
|---|
| Dzumhur, Damir |
| | Bulgarien (1) |
|---|
| Dimitrov, Grigor |
| | Canada (3) |
|---|
| Auger-Aliassime, Felix | | Raonic, Milos | | Shapovalov, Denis |
|
| | Kroatien (3) |
|---|
| Cilic, Marin | | Coric, Borna | | Karlovic, Ivo |
| | Tjekkiet (1) |
|---|
| Berdych, Tomas |
| | Frankrig (8) |
|---|
| Chardy, Jeremy | | Herbert, Pierre-Hugues | | Humbert, Ugo | | Mannarino, Adrian | | Monfils, Gael | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles |
|
| Georgien (1) |
|---|
| Basilashvili, Nikoloz |
| | Tyskland (6) |
|---|
| Gojowczyk, Peter | | Kohlschreiber, Philipp | | Marterer, Maximilian | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
| | Grækenland (1) |
|---|
| Tsitsipas, Stefano |
| | Ungarn (1) |
|---|
| Fucsovics, Marton |
|
| Indien (1) |
|---|
| Gunneswaran, Prajnesh |
| | Italien (4) |
|---|
| Berrettini, Matteo | | Cecchinato, Marco | | Fognini, Fabio | | Seppi, Andreas |
| | Japan (4) |
|---|
| Daniel, Taro | | Ito, Tatsuma | | Nishikori, Kei | | Nishioka, Yoshihito |
| | Kasakhstan (1) |
|---|
| Kukushkin, Mikhail |
|
| Letland (1) |
|---|
| Gulbis, Ernests |
| | Litauen (1) |
|---|
| Berankis, Ricardas |
| | |
| | | Rumænien (1) |
|---|
| Copil, Marius |
| | Rusland (3) |
|---|
| Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey |
|
| Serbien (5) |
|---|
| Djere, Laslo | | Djokovic, Novak | | Kecmanovic, Miomir | | Krajinovic, Filip | | Lajovic, Dusan |
| | Slovakiet (1) |
|---|
| Klizan, Martin |
| | Sydafrika (1) |
|---|
| Anderson, Kevin |
| | Spanien (7) |
|---|
| Bautista Agut, Roberto | | Carballes Baena, Roberto | | Carreno Busta, Pablo | | Lopez, Feliciano | | Munar, Jaume | | Nadal, Rafael | | Ramos-Vinolas, Albert |
|
| | Schweizisk (2) |
|---|
| Federer, Roger | | Wawrinka, Stan |
| | Tunesien (1) |
|---|
| Jaziri, Malek |
| | Storbritannien (3) |
|---|
| Edmund, Kyle | | Evans, Daniel | | Norrie, Cameron |
|
| USA (15) |
|---|
| Donaldson, Jared | | Fratangelo, Bjorn | | Fritz, Taylor | | Giron, Marcos | | Harrison, Ryan | | Isner, John | | Johnson, Steve | | Klahn, Bradley | | Kudla, Denis | | McDonald, Mackenzie | | Opelka, Reilly | | Querrey, Sam | | Sandgren, Tennys | | Tiafoe, Frances | | Young, Donald |
| | Usbekistan (1) |
|---|
| Istomin, Denis |
|