Stadium: Court 2 Round: 54 Ground: Clay
| ITF M25 Frankfurt am Main | 2021/08/09 10:50 | Daniel Cukierman v Dominik Kellovsky | 6-2,6-3 |
| ITF M25 Wetzlar | 2021/08/05 10:40 | David Pichler v Daniel Cukierman | 6-2,6-4 |
| ITF M25 Wetzlar | 2021/08/04 09:55 | Daniel Cukierman v Lucas Gerch | 6-3,2-6,6-4 |
| 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 Belgrade | 2021/07/04 07:55 | Nick Hardt v Daniel Cukierman | 3-6,6-3,6-3 |
| ITF M25 Frankfurt am Main | 2021/08/09 11:05 | Jan Soeren Hain v Karlo Cubelic | 3-6,2-6 |
| ITF M25 Marburg | 2021/07/05 13:55 | Dominik Recek v Karlo Cubelic | 6-4,6-2 |
| ITF M15 Antalya | 2021/06/06 07:30 | Karlo Cubelic v Vitali Shvets | 5-7,6-4,3-10 |
| ITF M15 Jerusalem | 2021/05/13 07:00 | Karlo Cubelic v Felix Corwin | 2-6,0-6 |
| ITF M15 Jerusalem | 2021/05/12 12:00 | Roi Ginat v Karlo Cubelic | 1-6,3-6 |
| ITF M15 Jerusalem | 2021/05/11 06:30 | Karlo Cubelic v Charles Minc | 5-7,6-4,10-5 |
| ITF M15 Jerusalem | 2021/05/10 07:00 | Karlo Cubelic v Stefan Simeunovic | 6-1,6-1 |
| ITF M15 Ramat Hasharon | 2021/05/04 07:00 | Karlo Cubelic v Bradley Paliska | 4-6,4-6 |