| UTR Pro Tennis Series Barcelona | 2021/06/24 08:30 | Kuzey Cekirge v Federico Zeballos | 1-6,6-4,7-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/06 10:00 | Franco Ribero v Kuzey Cekirge | 2-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/05 13:00 | Jordi Samper-Montana v Kuzey Cekirge | 2-6,5-7 |
| UTR Pro Tennis Series Barcelona | 2021/08/04 08:30 | Osgar O'Hoisin v Kuzey Cekirge | 3-6,6-7 |
| UTR Pro Tennis Series Barcelona | 2021/08/02 11:30 | Nicolas Bianchi v Kuzey Cekirge | 3-6,6-3,4-6 |
| ITF M25 Idanha-A-Nova | 2021/07/12 08:00 | Illia Stoliar v Kuzey Cekirge | 6-2,6-3 |
| ITF M15 Almada | 2021/07/06 10:30 | Joao Lucas Reis da Silva v Kuzey Cekirge | 6-1,6-3 |
| ITF M15 Almada | 2021/07/05 11:30 | Kuzey Cekirge v Matthew Dellavedova | 6-3,6-3 |
| ITF M15 Almada | 2021/07/04 13:00 | Kuzey Cekirge v Francisco Faria | 6-1,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/06 11:30 | Federico Zeballos v Pablo Carretero | 6-0,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/04 07:00 | Federico Zeballos v Angel G Melgar | 6-4,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/03 08:30 | Federico Zeballos v Marat Deviatiarov | 7-6,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/08/02 10:00 | Jay Friend v Federico Zeballos | 1-6,0-6 |
| Challenger Segovia | 2021/07/25 09:00 | Federico Zeballos v Alexander Cozbinov | 1-6,1-6 |
| Challenger Pozoblanco | 2021/07/23 20:20 | Federico Zeballos v Gregoire Barrere | 4-6,3-6 |
| Challenger Pozoblanco | 2021/07/21 15:00 | Federico Zeballos v Filip Cristian Jianu | 7-6,6-4 |
| Challenger Pozoblanco | 2021/07/20 15:00 | Borna Gojo v Federico Zeballos | 4-6,6-7 |