| Argentinië (2) |
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| Pella, Guido | | Schwartzman, Diego |
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| Haider-Maurer, Andreas |
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| Basic, Mirza |
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| Baghdatis, Marcos |
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| Monfils, Gael |
| | Duitsland (11) |
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| Bachinger, Matthias | | Brown, Dustin | | Hanfmann, Yannick | | Kohlschreiber, Philipp | | Maden, Yannick | | Marterer, Maximilian | | Masur, Daniel | | Mayer, Florian | | Struff, Jan-Lennard | | Zverev, Alexander | | Zverev, Mischa |
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| Fucsovics, Marton |
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| Chung, Hyeon |
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| Bautista Agut, Roberto |
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