Stadium: Center Court Ground: Carpet indoor
| German Masters | 2020/07/30 09:30 | Julian Lenz v Mischa Zverev | 3-6,3-6 |
| 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 |
| Challenger Biella | 2021/05/17 08:00 | Mischa Zverev v Omar Giacalone | 6-7,2-6 |
| Challenger Biella | 2021/05/16 09:00 | Mischa Zverev v Geoffrey Blancaneaux | 6-2,6-0 |
| ITF M25 Prague | 2021/05/12 07:30 | Mischa Zverev v Peter Goldsteiner | 7-6,5-7,6-1 |
| ATP Munich | 2021/04/24 11:00 | Mischa Zverev v Daniel Elahi Galan | 3-6,3-6 |
| ATP Monte Carlo | 2021/04/10 10:20 | Mischa Zverev v Juan Ignacio Londero | 4-6,1-6 |
| Challenger Seville | 2021/09/08 09:00 | Julian Lenz v Carlos Taberner | 3-6,3-6 |
| Challenger Seville | 2021/09/06 17:00 | Goncalo Oliveira v Julian Lenz | 2-6,6-4,2-6 |
| Challenger Como | 2021/08/31 15:15 | Julian Lenz v Jozef Kovalik | 5-7,2-6 |
| Challenger Warsaw | 2021/08/24 14:45 | Lukas Klein v Julian Lenz | 6-1,3-6,6-3 |
| Challenger Luedenscheid | 2021/08/21 12:35 | Julian Lenz v Nicolas Jarry | 1-6,4-6 |
| Challenger Luedenscheid | 2021/08/20 11:30 | Mirza Basic v Julian Lenz | 5-7,5-7 |
| Challenger Luedenscheid | 2021/08/18 12:45 | Julian Lenz v Roman Safiullin | 5-7,6-4,6-2 |
| Challenger Luedenscheid | 2021/08/17 08:00 | Julian Lenz v Shintaro Mochizuki | 5-7,7-5,6-2 |