Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Frankfurt am Main | 2021/08/14 12:05 | Lucas Gerch v Yshai Oliel | 6-4,3-6,5-7 |
| ITF M25 Frankfurt am Main | 2021/08/13 14:00 | Lucas Gerch v Louis Wessels | 3-6,6-3,6-4 |
| ITF M25 Frankfurt am Main | 2021/08/12 11:15 | Matthew Romios v Lucas Gerch | 6-7,1-6 |
| ITF M25 Frankfurt am Main | 2021/08/11 15:30 | Kai Wehnelt v Lucas Gerch | 6-3,2-6,4-6 |
| ITF M25 Wetzlar | 2021/08/04 09:55 | Daniel Cukierman v Lucas Gerch | 6-3,2-6,6-4 |
| Challenger Poznan | 2021/07/26 11:35 | David Poljak v Lucas Gerch | 7-5,1-6,6-4 |
| Challenger Poznan | 2021/07/25 10:30 | Sebastian Fanselow v Lucas Gerch | 2-6,5-7 |
| ITF M25 The Hague | 2021/07/01 09:55 | Manuel Guinard v Lucas Gerch | 6-3,6-2 |
| ITF M25 Pitesti | 2021/08/06 08:00 | Corentin Denolly v Gabi Adrian Boitan | 1-6,3-6 |
| ITF M25 Pitesti | 2021/08/05 13:25 | Corentin Denolly v Dan Alexandru Tomescu | 7-6,6-4 |
| ITF M25 Pitesti | 2021/08/04 05:55 | Corentin Denolly v Simeon Terziev | 6-3,7-5 |
| Challenger Nur-Sultan | 2021/07/19 10:55 | Chun Hsin Tseng v Corentin Denolly | 6-4,6-4 |
| Challenger Nur-Sultan | 2021/07/12 10:20 | Corentin Denolly v Chun Hsin Tseng | 2-6,6-3,3-6 |
| ITF M25 Montauban | 2021/06/23 09:00 | Corentin Denolly v Arthur Cazaux | 1-6,6-0,2-6 |
| Challenger Almaty Qual | 2021/06/13 05:15 | Vladyslav Manafov v Corentin Denolly | 7-6,7-5 |
| Challenger Almaty | 2021/06/07 04:00 | Vitaliy Sachko v Corentin Denolly | 6-1,6-3 |