| UTR Pro Tennis Series Bukurešť | 2021/06/03 07:30 | George Botezan v Oscar Jose Gutierrez | 0-6,3-6 |
| UTR Pro Tennis Series Bukurešť | 2021/06/02 10:00 | Oscar Jose Gutierrez v Ioan Chirita | 6-2,5-4 |
| ITF M15 Bukurešť | 2021/05/27 09:30 | Nicolae Frunza v Oscar Jose Gutierrez | 6-4,3-6,6-4 |
| ITF M15 Bukurešť | 2021/05/25 14:00 | Clement Tabur v Oscar Jose Gutierrez | 4-6,2-6 |
| ITF M25 Vic | 2021/05/19 12:10 | Michael Geerts v Oscar Jose Gutierrez | 6-2,6-3 |
| ITF M25 Vic | 2021/05/18 08:00 | Oscar Jose Gutierrez v Facundo Juarez | 2-6,3-6 |
| ITF M25 Vic | 2021/05/17 08:00 | Oscar Jose Gutierrez v Vicente O Moratalla | 6-2,6-0 |
| ITF M15 Valldoreix | 2021/05/13 07:55 | Alex M Pujolras v Oscar Jose Gutierrez | 7-5,6-2 |
| UTR Pro Tennis Series Bukurešť | 2021/06/03 12:00 | Kuzey Cekirge v Samuil Konov | 6-3,4-6,7-5 |
| UTR Pro Tennis Series Bukurešť | 2021/06/03 06:00 | Kuzey Cekirge v Valentin Vanta | 6-3,7-5 |
| UTR Pro Tennis Series Bukurešť | 2021/06/02 11:30 | Vlad Andrei Dancu v Kuzey Cekirge | 3-6,6-3,2-6 |
| ITF M15 Bukurešť | 2021/05/23 10:00 | Kuzey Cekirge v Taiyo Yamanaka | 3-6,4-6 |
| ITF M25 Vic | 2021/05/16 07:00 | Kuzey Cekirge v Louis Dussin | 2-6,6-7 |
| ITF M15 Valldoreix | 2021/05/10 08:00 | Roman Andres Burruchaga v Kuzey Cekirge | 6-1,7-6 |
| ITF M15 Valldoreix | 2021/05/09 12:00 | Goncalo Falcao v Kuzey Cekirge | 3-6,1-6 |
| UTR Pro Tennis Series - Barcelona | 2021/05/02 07:00 | Bruno P Navarro v Kuzey Cekirge | 6-4,6-4 |