| Argentina (2) |
|---|
| Del Potro, Juan Martin | | Schwartzman, Diego |
| | Austria (1) |
|---|
| Thiem, Dominic |
| | | Bulgaria (1) |
|---|
| Dimitrov, Grigor |
|
| Canada (2) |
|---|
| Pospisil, Vasek | | Shapovalov, Denis |
| | Croazia (2) |
|---|
| Cilic, Marin | | Coric, Borna |
| | Francia (10) |
|---|
| Benneteau, Julien | | Chardy, Jeremy | | Gasquet, Richard | | Herbert, Pierre-Hugues | | Mahut, Nicolas | | Mannarino, Adrian | | Paire, Benoit | | Pouille, Lucas | | Simon, Gilles | | Tsonga, Jo-Wilfried |
| | Germania (4) |
|---|
| Gojowczyk, Peter | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
|
| | Giappone (1) |
|---|
| Sugita, Yuichi |
| | | Portogallo (1) |
|---|
| Sousa, Joao |
|
| Russia (3) |
|---|
| Donskoy, Evgeny | | Khachanov, Karen | | Rublev, Andrey |
| | Serbia (2) |
|---|
| Krajinovic, Filip | | Troicki, Viktor |
| | Sud Africa (1) |
|---|
| Anderson, Kevin |
| | Corea del Sud (1) |
|---|
| Chung, Hyeon |
|
| Spagna (7) |
|---|
| Bautista Agut, Roberto | | Carreno Busta, Pablo | | Ferrer, David | | Lopez, Feliciano | | Nadal, Rafael | | Ramos-Vinolas, Albert | | Verdasco, Fernando |
| | Regno Unito (1) |
|---|
| Edmund, Kyle |
| | Stati Uniti (5) |
|---|
| Harrison, Ryan | | Isner, John | | Johnson, Steve | | Querrey, Sam | | Sock, Jack |
| |