| ITF Spain F2 | 2018/01/20 13:30 | Egor Matvievici v Tatyanin, Nikita | 2-6,2-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/13 12:00 | Tatyanin, Nikita v Anthony Genov | 5-7,1-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/12 07:30 | Tatyanin, Nikita v Giusca, Teodor | 2-6,0-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/11 09:00 | Tatyanin, Nikita v Doria, Luciano | 4-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/10 07:30 | Tatyanin, Nikita v Niv, Benjamin | 6-1,6-2 |
| ITF M25 Denia | 2019/07/22 08:30 | Imanol L Morillo v Tatyanin, Nikita | 6-3,6-1 |
| ITF M25 Gandia | 2019/07/16 09:05 | Alex M Pujolras v Tatyanin, Nikita | 6-0,6-2 |
| ITF M25 Gandia | 2019/07/15 08:15 | Martinetti, Pietro v Tatyanin, Nikita | 4-6,2-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/14 08:00 | Tatyanin, Nikita v de Maio, Mauro | 0-6,1-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/13 08:30 | Egor Matvievici v Kuzey Cekirge | 0-6,1-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/12 11:35 | Egor Matvievici v Pol Del Castillo | 2-6,0-6 |
| UTR Pro Tennis Series Barcelona | 2022/07/10 12:58 | Egor Matvievici v Kalinin, Aleksandr | 6-1,6-2 |
| UTR Pro Tennis Series Barcelona | 2022/07/10 10:59 | Alvaro Bueno Gil v Egor Matvievici | 6-2,6-0 |
| ITF M15 Skopje | 2022/06/12 08:00 | Evans, Thomas v Egor Matvievici | 6-3,6-4 |
| UTR Pro Tennis Series Zadar | 2022/06/04 15:27 | Dujmovic, Grgo v Egor Matvievici | 4-6,7-5,7-6 |
| UTR Pro Tennis Series Zadar | 2022/06/03 07:30 | Keisidis, Christos v Egor Matvievici | 6-1,7-6 |
| UTR Pro Tennis Series Zadar | 2022/06/02 06:00 | Rumler, Robert v Egor Matvievici | 6-3,7-5 |