| 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 |
| UTR Pro Tennis Series Barcelona | 2021/06/10 11:00 | Kuzey Cekirge v Xavier Gabarro | 3-6,6-7 |
| UTR Pro Tennis Series Barcelona | 2021/06/09 12:30 | Kuzey Cekirge v Marcelo Zormann | 6-7,3-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/08 09:30 | Kuzey Cekirge v Diego F Flores | 2-6,6-1,6-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/07 08:00 | Kuzey Cekirge v Alexandre Reco | 6-4,4-6,1-5 |
| UTR Pro Tennis Series - Bukurešť | 2021/06/04 10:00 | Oscar Jose Gutierrez v Kuzey Cekirge | 6-3,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/06/23 09:30 | Federico Zeballos v Jay Friend | 6-3,5-1 |
| UTR Pro Tennis Series Barcelona | 2021/06/22 12:30 | Federico Zeballos v Juan C Garcia Garcia | 6-3,5-4 |
| UTR Pro Tennis Series Barcelona | 2021/06/21 08:00 | Alejandro Garcia v Federico Zeballos | 3-6,5-7 |
| Challenger - Prostějov | 2021/06/13 12:30 | Federico Zeballos v Skander Mansouri | 6-7,0-6 |
| Challenger - Oeiras | 2021/05/24 10:00 | Filip Cristian Jianu v Federico Zeballos | 6-4,7-5 |
| Challenger - Oeiras | 2021/05/23 10:00 | Federico Zeballos v Vladyslav Orlov | 1-6,6-0,7-6 |
| UTR Pro Tennis Series - Florida | 2021/03/12 15:30 | Cristian C. Rodriguez Sanchez v Federico Zeballos | 7-6,1-6,6-6 |
| UTR Pro Tennis Series - Florida | 2021/03/11 20:00 | Fletcher Scott v Federico Zeballos | 6-1,6-1 |