Stadium: Center Court Round: 25 Ground: Clay
| ITF M25 - Wetzlar | 2021/08/03 09:00 | Daniel Cukierman v Stepan Pecak | 6-1,6-1 |
| ITF M25 - Wetzlar | 2021/08/02 08:00 | Daniel Cukierman v Tomas Papik | 3-6,7-6,10-4 |
| ITF M25 - Telavi | 2021/07/27 07:30 | Vladyslav Orlov v Daniel Cukierman | 7-5,2-6,7-6 |
| ITF M25 Marburg | 2021/07/07 12:30 | Daniel Cukierman v Milan Welte | 4-6,4-6 |
| ITF M25 - Belgrado | 2021/07/04 07:55 | Nick Hardt v Daniel Cukierman | 3-6,6-3,6-3 |
| ITF M25 - Belgrado | 2021/07/02 07:00 | Daniel Cukierman v Miljan Zekic | 6-4,6-4 |
| ITF M25 - Belgrado | 2021/07/01 07:00 | Jaimee Floyd Angele v Daniel Cukierman | 6-3,4-6,4-6 |
| ITF M25 - Belgrado | 2021/06/30 07:00 | Strahinja Rakic v Daniel Cukierman | 3-6,2-6 |
| Challenger - Poznań | 2021/07/26 11:35 | David Poljak v Lucas Gerch | 7-5,1-6,6-4 |
| Challenger - Poznań | 2021/07/25 10:30 | Sebastian Fanselow v Lucas Gerch | 2-6,5-7 |
| ITF M25 - Den Haag | 2021/07/01 09:55 | Manuel Guinard v Lucas Gerch | 6-3,6-2 |
| ITF M25 - Den Haag | 2021/06/29 11:20 | Lucas Gerch v Vladimir Ivanov | 6-1,6-2 |
| Challenger - Forlì | 2021/06/16 09:30 | Francesco Forti v Lucas Gerch | 6-4,6-4 |
| Challenger - Forlì | 2021/06/15 09:30 | Lucas Gerch v Thiago Agustin Tirante | 7-6,3-6,6-3 |
| Challenger - Forlì | 2021/06/14 09:30 | Lucas Gerch v Elmar Ejupovic | 4-6,6-4,7-6 |
| Challenger - Forlì | 2021/06/13 09:45 | Alessandro Bega v Lucas Gerch | 3-6,1-6 |