Stadium: Center Court Round: 14 Ground: Carpet indoor
| Challenger Ismaning | 2021/10/25 11:25 | Mischa Zverev v Julian Lenz | 5-7,6-7 |
| Challenger Alicante | 2021/10/14 09:30 | Mischa Zverev v Frederico Ferreira Silva | 2-6,0-6 |
| Challenger Alicante | 2021/10/11 14:30 | Vladyslav Orlov v Mischa Zverev | 2-6,1-6 |
| Challenger Mouilleron le Captif | 2021/10/03 11:00 | Mischa Zverev v Jurgen Briand | 3-6,3-6 |
| Challenger Orleans | 2021/09/26 12:05 | Mischa Zverev v Kyrian Jacquet | 6-7,1-6 |
| Challenger Luedenscheid | 2021/08/17 14:45 | Mischa Zverev v Julien Cagnina | 3-6,1-6 |
| Challenger Prague | 2021/08/09 15:30 | Riccardo Bonadio v Mischa Zverev | 6-3,2-6,6-3 |
| Challenger Braunschweig | 2021/07/06 15:25 | Nicola Kuhn v Mischa Zverev | 6-2,7-6 |
| ITF M15 Allershausen | 2021/08/31 10:00 | Alen Mujakic v Juan Ignacio Galarza | 3-6,2-6 |