Germany - 9 June 2021 - 11 June 2021
The winners of this round are qualified
| 9th Jun - 08h30 | Lars Brinkhaus | def. | Johannes Schnabel | 3-2 (11-5, 8-11, 11-8, 6-11, 11-9) |
| 9th Jun - 09h10 |  Carlos Mühlbach | def. | Michael Engelhardt | 3-0 (11-1, 13-11, 11-8) |
| 9th Jun - 09h50 | Dennis Klein | def. |  Dillon Chambers | 3-0 (11-5, 11-4, 11-5) |
| 9th Jun - 10h30 |  Miguel Chamorro | def. |  Andrey Semenov | 3-1 (13-11, 11-8, 9-11, 11-4) |
| 9th Jun - 11h10 | Michael Engelhardt | def. | Johannes Schnabel | 3-1 (11-8, 12-14, 11-8, 11-6) |
| 9th Jun - 11h50 | Dennis Klein | def. | Carlos Mühlbach | 3-2 (9-11, 9-11, 14-12, 11-9, 11-8) |
| 9th Jun - 12h45 | Andrey Semenov | def. | Dillon Chambers | 3-0 (11-5, 11-8, 11-8) |
| 9th Jun - 13h10 | Miguel Chamorro | def. | Lars Brinkhaus | 3-0 (11-6, 11-8, 11-8) |
| 9th Jun - 13h50 | Dennis Klein | def. | Johannes Schnabel | 3-0 (11-4, 11-3, 11-6) |
| 9th Jun - 14h30 | Michael Engelhardt | def. | Lars Brinkhaus | 3-0 (11-7, 11-9, 11-9) |
| 9th Jun - 15h10 | Carlos Mühlbach | def. | Andrey Semenov | 3-0 (11-7, 11-2, 11-8) |
| 10th Jun - 08h30 | Dillon Chambers | def. | Miguel Chamorro | 3-2 (11-8, 6-11, 7-11, 13-11, 11-8) |
| 10th Jun - 09h10 | Dennis Klein | def. | Michael Engelhardt | 3-0 (11-5, 11-8, 11-4) |
| 10th Jun - 09h50 | Dillon Chambers | def. | Lars Brinkhaus | 3-0 (11-3, 11-5, 11-4) |
| 10th Jun - 10h30 | Andrey Semenov | def. | Johannes Schnabel | 3-1 (11-6, 7-11, 11-6, 11-5) |
| 10th Jun - 11h10 | Carlos Mühlbach | def. | Miguel Chamorro | 3-2 (11-9, 15-17, 8-11, 11-6, 11-2) |
| 10th Jun - 11h50 | Dennis Klein | def. | Lars Brinkhaus | 3-0 (11-9, 11-9, 11-3) |
| 10th Jun - 12h30 | Michael Engelhardt | def. | Andrey Semenov | 3-2 (11-8, 7-11, 11-7, 7-11, 12-10) |
| 10th Jun - 13h10 | Carlos Mühlbach | def. | Dillon Chambers | 3-0 (11-6, 11-2, 11-7) |
| 10th Jun - 13h50 | Miguel Chamorro | def. | Johannes Schnabel | 3-0 (11-6, 11-8, 11-5) |
| 10th Jun - 14h30 | Carlos Mühlbach | def. | Lars Brinkhaus | 3-0 (11-7, 11-7, 11-8) |
| 11th Jun - 08h30 | Andrey Semenov | def. | Dennis Klein | 3-1 (11-7, 11-7, 10-12, 14-12) |
| 11th Jun - 09h10 | Miguel Chamorro | def. | Michael Engelhardt | 3-1 (12-10, 11-8, 10-12, 11-7) |
| 11th Jun - 09h50 | Dillon Chambers | def. | Johannes Schnabel | 3-0 (11-4, 11-6, 11-6) |
| 11th Jun - 10h30 | Andrey Semenov | def. | Lars Brinkhaus | 3-0 (11-9, 13-11, 11-6) |
| 11th Jun - 11h10 | Dennis Klein | def. | Miguel Chamorro | 3-0 (11-7, 11-9, 11-1) |
| 11th Jun - 11h50 | Dillon Chambers | def. | Michael Engelhardt | 3-0 (11-9, 11-6, 11-7) |
| 11th Jun - 12h30 | Carlos Mühlbach | def. | Johannes Schnabel | 3-0 (11-4, 11-6, 11-9) |
Classification
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