Germany - 2 June 2021 - 4 June 2021
The winners of this round are qualified
| 2nd Jun - 08h30 | Samuel Amann | def. | Christopher Ligocki | 3-1 (7-11, 11-8, 11-6, 11-9) |
| 2nd Jun - 09h10 | Dennis Klein | def. |  Fedor Kuzmin | 3-0 (11-9, 11-9, 11-9) |
| 2nd Jun - 09h50 |  Evgueni Chtchetinine | def. |  Peter Hribar | 3-2 (11-13, 7-11, 11-2, 11-7, 11-7) |
| 2nd Jun - 10h30 |  Dauud Cheaib | def. |  Dillon Chambers | 3-1 (11-9, 8-11, 13-11, 11-7) |
| 2nd Jun - 11h10 | Dennis Klein | def. | Christopher Ligocki | 3-0 (11-4, 11-4, 11-3) |
| 2nd Jun - 11h50 | Peter Hribar | def. | Fedor Kuzmin | 3-1 (11-8, 11-4, 9-11, 11-7) |
| 2nd Jun - 12h30 | Evgueni Chtchetinine | def. | Dillon Chambers | 3-1 (10-12, 11-3, 11-4, 11-6) |
| 2nd Jun - 13h10 | Dauud Cheaib | def. | Samuel Amann | 3-0 (11-2, 11-3, 11-3) |
| 2nd Jun - 13h50 | Peter Hribar | def. | Christopher Ligocki | 3-0 (11-6, 11-5, 11-3) |
| 2nd Jun - 14h30 | Dennis Klein | def. | Samuel Amann | 3-0 (11-2, 11-8, 11-6) |
| 2nd Jun - 15h10 | Dillon Chambers | def. | Fedor Kuzmin | 3-2 (7-11, 11-7, 5-11, 11-6, 11-8) |
| 3rd Jun - 08h30 | Dauud Cheaib | def. | Evgueni Chtchetinine | 3-0 (11-3, 11-3, 11-5) |
| 3rd Jun - 09h10 | Peter Hribar | def. | Dennis Klein | 3-0 (11-8, 12-10, 11-3) |
| 3rd Jun - 09h50 | Evgueni Chtchetinine | def. | Samuel Amann | 3-0 (11-5, 11-4, 11-1) |
| 3rd Jun - 10h30 | Dillon Chambers | def. | Christopher Ligocki | 3-0 (11-5, 11-6, 11-3) |
| 3rd Jun - 11h10 | Dauud Cheaib | def. | Fedor Kuzmin | 3-0 (11-9, 11-8, 11-6) |
| 3rd Jun - 11h50 | Peter Hribar | def. | Samuel Amann | 3-0 (11-1, 11-2, 11-4) |
| 3rd Jun - 12h30 | Dennis Klein | def. | Dillon Chambers | 3-0 (11-4, 11-9, 11-6) |
| 3rd Jun - 13h10 | Fedor Kuzmin | def. | Evgueni Chtchetinine | 3-0 (11-5, 11-9, 11-5) |
| 3rd Jun - 13h50 | Dauud Cheaib | def. | Christopher Ligocki | 3-0 (11-4, 11-6, 11-5) |
| 3rd Jun - 14h30 | Fedor Kuzmin | def. | Samuel Amann | 3-0 (11-4, 11-7, 13-11) |
| 4th Jun - 08h30 | Peter Hribar | def. | Dillon Chambers | 3-2 (11-4, 5-11, 11-13, 11-9, 11-9) |
| 4th Jun - 09h15 | Dauud Cheaib | def. | Dennis Klein | 3-2 (11-3, 11-7, 9-11, 9-11, 13-11) |
| 4th Jun - 09h50 | Evgueni Chtchetinine | def. | Christopher Ligocki | 3-0 (11-6, 11-3, 11-2) |
| 4th Jun - 10h30 | Dillon Chambers | def. | Samuel Amann | 3-0 (11-9, 11-4, 11-5) |
| 4th Jun - 11h10 | Dauud Cheaib | def. | Peter Hribar | 3-2 (7-11, 10-12, 11-9, 11-6, 11-5) |
| 4th Jun - 11h50 | Dennis Klein | def. | Evgueni Chtchetinine | 3-1 (8-11, 11-8, 11-9, 11-8) |
| 4th Jun - 12h30 | Fedor Kuzmin | def. | Christopher Ligocki | 3-1 (11-13, 11-5, 11-6, 11-6) |
Classification
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