Germany - 7 June 2021 - 8 June 2021
The winners of this round are qualified
| 7th Jun - 08h30 |  Felix Wetzel | def. | Marius Henninger | 3-0 (11-6, 11-8, 11-4) |
| 7th Jun - 09h10 | Florian Bluhm | def. | Johannes Schnabel | 3-0 (11-4, 11-4, 11-3) |
| 7th Jun - 09h50 |  Carlos Mühlbach | def. | Lars Brinkhaus | 3-0 (11-8, 11-6, 13-11) |
| 7th Jun - 10h30 |  Dauud Cheaib | def. |  Andrey Semenov | 3-1 (11-6, 11-3, 5-11, 11-5) |
| 7th Jun - 11h10 | Florian Bluhm | def. | Felix Wetzel | 3-0 (11-4, 11-8, 11-8) |
| 7th Jun - 11h50 | Lars Brinkhaus | def. | Johannes Schnabel | 3-1 (4-11, 11-6, 11-7, 11-4) |
| 7th Jun - 12h30 | Dauud Cheaib | def. | Carlos Mühlbach | 3-0 (11-5, 11-5, 11-5) |
| 7th Jun - 13h10 | Andrey Semenov | def. | Marius Henninger | 3-2 (11-6, 11-8, 5-11, 7-11, 11-6) |
| 7th Jun - 13h50 | Felix Wetzel | def. | Lars Brinkhaus | 3-0 (12-10, 11-7, 11-4) |
| 7th Jun - 14h30 | Florian Bluhm | def. | Marius Henninger | 3-0 (11-5, 11-5, 11-3) |
| 7th Jun - 16h00 | Carlos Mühlbach | def. | Andrey Semenov | 3-0 (11-4, 11-8, 11-9) |
| 7th Jun - 16h40 | Dauud Cheaib | def. | Johannes Schnabel | 3-0 (11-1, 11-4, 11-1) |
| 7th Jun - 17h20 | Florian Bluhm | def. | Lars Brinkhaus | 3-1 (11-5, 7-11, 11-4, 11-8) |
| 7th Jun - 18h00 | Carlos Mühlbach | def. | Marius Henninger | 3-0 (11-8, 11-4, 11-6) |
| 7th Jun - 18h40 | Andrey Semenov | def. | Johannes Schnabel | 3-0 (11-7, 15-13, 12-10) |
| 7th Jun - 19h20 | Dauud Cheaib | def. | Felix Wetzel | 3-1 (15-13, 7-11, 11-3, 12-10) |
| 7th Jun - 20h00 | Marius Henninger | def. | Lars Brinkhaus | 3-0 (11-6, 11-3, 11-4) |
| 7th Jun - 20h40 | Felix Wetzel | def. | Andrey Semenov | 3-0 (11-9, 11-9, 11-7) |
| 7th Jun - 21h20 | Carlos Mühlbach | def. | Johannes Schnabel | 3-0 (11-8, 11-7, 11-7) |
| 7th Jun - 22h00 | Dauud Cheaib | def. | Florian Bluhm | 3-0 (12-10, 11-8, 11-9) |
| 8th Jun - 09h00 | Andrey Semenov | def. | Lars Brinkhaus | 3-2 (7-11, 11-9, 13-11, 9-11, 14-12) |
| 8th Jun - 10h20 | Dauud Cheaib | def. | Marius Henninger | 3-0 (11-4, 11-7, 11-4) |
| 8th Jun - 11h00 | Andrey Semenov | def. | Florian Bluhm | 3-0 (11-9, 11-8, 11-7) |
| 8th Jun - 11h40 | Marius Henninger | def. | Johannes Schnabel | 3-1 (11-7, 7-11, 11-6, 11-8) |
| 8th Jun - 12h20 | Dauud Cheaib | def. | Lars Brinkhaus | 3-0 (11-6, 11-4, 11-3) |
| 8th Jun - 13h00 | Felix Wetzel | def. | Johannes Schnabel | 3-0 (11-6, 11-9, 11-6) |
| 8th Jun - 13h40 | Carlos Mühlbach | def. | Florian Bluhm | 3-2 (9-11, 11-5, 11-9, 6-11, 11-7) |
| 8th Jun - 15h15 | Felix Wetzel | def. | Carlos Mühlbach | 3-0 (11-9, 11-7, 11-8) |
Classification
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