| Australia (6) |
|---|
| Bolt, Alex | | De Minaur, Alex | | Duckworth, James | | Kubler, Jason | | Kyrgios, Nick | | Thompson, Jordan |
| | Bielorussia (1) |
|---|
| Ivashka, Ilya |
| | | Bosnia-Erzegovina (1) |
|---|
| Basic, Mirza |
|
| Canada (2) |
|---|
| Pospisil, Vasek | | Shapovalov, Denis |
| | Cipro (1) |
|---|
| Baghdatis, Marcos |
| | Francia (5) |
|---|
| Chardy, Jeremy | | Herbert, Pierre-Hugues | | Millot, Vincent | | Paire, Benoit | | Pouille, Lucas |
| | Germania (2) |
|---|
| Zverev, Alexander | | Zverev, Mischa |
|
| Grecia (1) |
|---|
| Tsitsipas, Stefano |
| | Giappone (3) |
|---|
| Nishikori, Kei | | Sugita, Yuichi | | Watanuki, Yosuke |
| | Lituania (1) |
|---|
| Berankis, Ricardas |
| | Polonia (1) |
|---|
| Hurkacz, Hubert |
|
| | Russia (5) |
|---|
| Donskoy, Evgeny | | Khachanov, Karen | | Medvedev, Daniil | | Rublev, Andrey | | Youzhny, Mikhail |
| | Slovacchia (1) |
|---|
| Lacko, Lukas |
| | Corea del Sud (1) |
|---|
| Chung, Hyeon |
|
| Svizzera (1) |
|---|
| Wawrinka, Stan |
| | | Regno Unito (2) |
|---|
| Edmund, Kyle | | Murray, Andy |
| | Stati Uniti (12) |
|---|
| Donaldson, Jared | | Isner, John | | Johnson, Steve | | Krueger, Mitchell | | Kudla, Denis | | Kwiatkowski, Thai-Son | | McDonald, Mackenzie | | Paul, Tommy | | Rubin, Noah | | Smyczek, Tim | | Tiafoe, Frances | | Young, Donald |
|