Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M25 Johannesburg | 2021/09/14 08:00 | Daniel Cukierman v Timur Kiyamov | 6-7,6-3,6-7 |
| ITF M25 Frankfurt am Main | 2021/08/13 11:45 | Eduard Esteve Lobato v Daniel Cukierman | 6-3,6-2 |
| ITF M25 Frankfurt am Main | 2021/08/12 09:00 | Daniel Cukierman v Pedro Sakamoto | 6-3,1-6,6-1 |
| ITF M25 Frankfurt am Main | 2021/08/11 14:00 | Yannick Mertens v Daniel Cukierman | 3-6,3-6 |
| ITF M25 Frankfurt am Main | 2021/08/10 08:20 | Daniel Cukierman v Karlo Cubelic | 2-6,6-4,10-2 |
| 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 Johannesburg | 2021/09/21 07:00 | Neil Oberleitner v Joshua Howard-Tripp | 6-3,6-1 |
| ITF M25 Johannesburg | 2021/09/20 08:15 | Neil Oberleitner v Alexey Dubinin | 6-0,6-1 |
| ITF M25 Johannesburg Qual | 2021/09/19 07:00 | Neil Oberleitner v Ethan Terblanche | 6-2,6-1 |
| ITF M25 Johannesburg | 2021/09/13 07:25 | Leonid Sheyngezikht v Neil Oberleitner | 6-3,1-6,10-4 |
| ITF M25 Johannesburg | 2021/09/12 07:30 | Shahar Gabay v Neil Oberleitner | 1-6,0-6 |
| Challenger Tulln | 2021/09/07 10:10 | Neil Oberleitner v Hugo Gaston | 6-7,2-6 |
| Challenger Tulln | 2021/09/06 08:00 | Neil Oberleitner v Gonzalo Villanueva | 7-5,6-2 |
| Challenger Tulln | 2021/09/05 10:50 | Rudolf Molleker v Neil Oberleitner | 2-6,5-7 |