| Australia (2) |
|---|
| Thompson, Jordan | | Tomic, Bernard |
| | | | Colombia (2) |
|---|
| Galan, Daniel Elahi | | Giraldo, Santiago |
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| | Francia (1) |
|---|
| Chardy, Jeremy |
| | |
| Serbia (2) |
|---|
| Krstin, Pedja | | Tipsarevic, Janko |
| | Spagna (2) |
|---|
| Garcia-Lopez, Guillermo | | Granollers, Marcel |
| | Svizzera (1) |
|---|
| Laaksonen, Henri |
| | Regno Unito (1) |
|---|
| Norrie, Cameron |
|
| Stati Uniti (11) |
|---|
| Fratangelo, Bjorn | | Fritz, Taylor | | Harrison, Ryan | | Johnson, Steve | | Klahn, Bradley | | Kudla, Denis | | McDonald, Mackenzie | | Opelka, Reilly | | Querrey, Sam | | Rubin, Noah | | Sandgren, Tennys |
| |