| Argentinië (5) |
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| Baez, Sebastian | | Cachin, Pedro | | Cerundolo, Francisco | | Etcheverry, Tomas Martin | | Pella, Guido |
| | | Brazilië (2) |
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| Monteiro, Thiago | | Seyboth Wild, Thiago |
| | Chili (1) |
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| Garin, Christian |
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| | Colombia (1) |
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| Galan, Daniel Elahi |
| | Frankrijk (4) |
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| Assche, Luca Van | | Fils, Arthur | | Gasquet, Richard | | Muller, Alexandre |
| | Duitsland (5) |
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| Altmaier, Daniel | | Hanfmann, Yannick | | Marterer, Maximilian | | Molleker, Rudolf | | Zverev, Alexander |
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| Italië (1) |
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| Musetti, Lorenzo |
| | Noorwegen (1) |
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| Ruud, Casper |
| | Peru (1) |
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| Varillas, Juan Pablo |
| | Rusland (1) |
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| Rublev, Andrey |
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| Servië (3) |
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| Djere, Laslo | | Kecmanovic, Miomir | | Lajovic, Dusan |
| | Slowakije (2) |
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| Kovalik, Jozef | | Molcan, Alex |
| | Spanje (2) |
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| Davidovich Fokina, Alejandro | | Zapata Miralles, Bernabe |
| |
| Verenigd Koninkrijk (1) |
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| Choinski, Jan |
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