Stadium: Court 1 Round: 44 Ground: Hardcourt outdoor
| ITF - Vale Do Lobo M25 | 2021/02/22 11:30 | Illia Stoliar v Kuzey Cekirge | 2-6,4-6 |
| ITF - Marbella M15 | 2021/05/23 07:00 | Michael Zhu v Illia Stoliar | 6-1,6-4 |
| ITF - Vale Do Lobo M25 | 2021/03/07 12:00 | Alejandro Moro Canas v Illia Stoliar | 6-2,6-2 |
| ITF - Faro M25 | 2021/03/02 10:00 | Ronan Joncour v Illia Stoliar | 6-1,6-4 |
| ITF - Faro M25 | 2021/03/01 11:00 | Illia Stoliar v Louroi Martinez | 6-7,6-4,10-5 |
| ITF - Vale Do Lobo M25 | 2021/02/22 11:30 | Illia Stoliar v Kuzey Cekirge | 2-6,4-6 |
| ITF - Quinta Do Lago M15 | 2020/11/01 14:00 | George Houghton v Illia Stoliar | 6-1,6-4 |
| ITF - Vale Do Lobo M25 | 2020/10/25 12:30 | Illia Stoliar v Patrick Foley | 3-6,1-6 |
| ITF - Setubal M15 | 2020/10/04 10:00 | Taiyo Yamanaka v Illia Stoliar | 7-6,7-6 |
| ITF - Almada M15 | 2021/07/06 10:30 | Joao Lucas Reis da Silva v Kuzey Cekirge | 6-1,6-3 |
| ITF - Almada M15 | 2021/07/05 11:30 | Kuzey Cekirge v Matthew Dellavedova | 6-3,6-3 |
| ITF - Almada M15 | 2021/07/04 13:00 | Kuzey Cekirge v Francisco Faria | 6-1,6-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/26 09:30 | Agustin Velotti v Kuzey Cekirge | 6-1,6-2 |
| 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 | 2021/06/23 09:30 | Kuzey Cekirge v Ihor Dudun | 6-0,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/06/22 11:00 | Kuzey Cekirge v David Perez Sanz | 6-1,6-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/20 10:00 | Kuzey Cekirge v Tristan Meraut | 6-3,6-2 |