| ITF M25 Santander | 2021/08/24 10:15 | Kuzey Cekirge v Oscar Jose Gutierrez | 7-5,2-6,1-6 |
| UTR Pro Tennis Series Bucharest | 2021/06/04 10:00 | Oscar Jose Gutierrez v Kuzey Cekirge | 6-3,6-2 |
| ITF M25 Lima | 2021/10/09 15:00 | Oscar Jose Gutierrez v Daniel Dutra Da Silva | 5-7,7-5,4-6 |
| ITF M25 Lima | 2021/10/08 19:10 | Oscar Jose Gutierrez v Conner Huertas Del Pino | 6-3,7-5 |
| ITF M25 Lima | 2021/10/07 17:55 | Oscar Jose Gutierrez v Boris Arias | 6-1,6-4 |
| ITF M25 Lima | 2021/10/05 17:05 | Oscar Jose Gutierrez v Jorge Panta | 6-2,6-2 |
| Challenger Lima | 2021/09/27 15:00 | Johan Nikles v Oscar Jose Gutierrez | 6-4,6-2 |
| Challenger Lima | 2021/09/26 19:50 | Ignacio Buse v Oscar Jose Gutierrez | 4-6,1-6 |
| ITF M15 Recife | 2021/09/23 14:50 | Marcelo Zormann v Oscar Jose Gutierrez | 6-2,4-6,7-5 |
| ITF M15 Recife | 2021/09/22 13:00 | Christian Oliveira v Oscar Jose Gutierrez | 3-6,0-6 |
| UTR Pro Tennis Series Barcelona | 2021/10/03 07:30 | Kuzey Cekirge v Noah Lopez | 4-6,6-1,5-0 |
| UTR Pro Tennis Series Barcelona | 2021/10/02 11:30 | Alexis Klegou v Kuzey Cekirge | 6-7,4-5 |
| UTR Pro Tennis Series Barcelona | 2021/10/01 12:30 | Ivan Marrero Curbelo v Kuzey Cekirge | 1-6,6-7 |
| UTR Pro Tennis Series Barcelona | 2021/09/30 08:00 | Adria Soriano Barrera v Kuzey Cekirge | 6-3,6-3 |
| UTR Pro Tennis Series Barcelona | 2021/09/28 08:00 | Jordi Garcia Mestre v Kuzey Cekirge | 3-6,5-6 |
| UTR Pro Tennis Series Barcelona | 2021/09/27 09:30 | Kuzey Cekirge v Bruno P Navarro | 6-4,6-4 |
| ITF M25 Oviedo | 2021/09/01 08:00 | Kuzey Cekirge v Miguel Damas | 6-7,1-6 |
| ITF M25 Oviedo | 2021/08/31 08:35 | Ilya Rudiukov v Kuzey Cekirge | 2-6,0-6 |