Stadium: Center Court Ground: Carpet indoor
| German Masters | 2020/07/30 09:30 | Julian Lenz v Mischa Zverev | 3-6,3-6 |
| 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 - Lüdenscheid | 2021/08/17 14:45 | Mischa Zverev v Julien Cagnina | 3-6,1-6 |
| Challenger - Praag | 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 Ismaning | 2021/10/24 12:40 | Julian Lenz v Geoffrey Blancaneaux | 6-4,7-5 |
| Challenger - Santiago | 2021/10/11 14:00 | Juan Manuel Cerundolo v Julian Lenz | 6-3,6-3 |
| Challenger - Santiago | 2021/10/07 14:00 | Julian Lenz v Juan Pablo Varillas | 2-6,4-6 |
| Challenger - Santiago | 2021/10/05 16:25 | Victor Nunez v Julian Lenz | 0-6,2-6 |
| Challenger - Lima | 2021/09/30 15:00 | Camilo Ugo Carabelli v Julian Lenz | 7-5,6-3 |
| Challenger - Lima | 2021/09/28 15:00 | Julian Lenz v Conner Huertas Del Pino | 6-3,6-3 |
| Challenger - Ambato | 2021/09/23 15:00 | Gerald Melzer v Julian Lenz | 6-3,7-5 |
| Challenger - Ambato | 2021/09/21 20:15 | Julian Lenz v Emilio Gomez | 6-4,7-6 |