Stadium: Court 6 Round: 54 Ground: Hardcourt indoor
| Challenger Oeiras | 2021/03/28 10:00 | Francisco Cabral v Ivan Nedelko | 6-2,5-7,6-4 |
| Challenger Zadar | 2021/03/25 09:30 | Nikola Milojevic v Ivan Nedelko | 6-2,6-1 |
| Challenger Zadar | 2021/03/23 13:30 | Teymuraz Gabashvili v Ivan Nedelko | 2-6,6-2,3-6 |
| Challenger Zadar | 2021/03/22 09:00 | Ivan Nedelko v Nerman Fatic | 6-4,1-6,3-6 |
| Challenger Zadar | 2021/03/21 11:30 | Ivan Nedelko v Noa Vukadin | 4-6,6-2,6-1 |
| ITF M15 Rovinj | 2021/03/18 09:00 | Ivan Nedelko v Timo Legout | 6-4,4-6,3-6 |
| ITF M15 Rovinj | 2021/03/17 12:50 | Ivan Nedelko v Lucas Bouquet | 6-1,3-6,6-1 |
| Challenger St. Petersburg Qual | 2021/03/07 11:20 | Jiri Lehecka v Ivan Nedelko | 6-1,6-3 |
| ITF M15 Kazan | 2021/03/11 09:10 | Sergei Pogosian v Sanjar Fayziev | 0-6,3-6 |
| ITF M15 Kazan | 2021/03/10 15:05 | Marat Sharipov v Sergei Pogosian | 6-4,3-6,6-7 |
| ITF M15 Kazan | 2021/03/09 09:30 | Sergei Pogosian v Alexander Ovcharov | 6-2,6-3 |
| ITF M15 Kazan | 2021/03/08 13:15 | Sergei Pogosian v Oscar Galimardanov | 6-3,5-7,10-7 |
| ITF M15 St Petersburg | 2021/02/01 09:25 | Alibek Kachmazov v Sergei Pogosian | 6-2,6-0 |
| ITF M15 St Petersburg | 2021/01/31 13:40 | Sergei Pogosian v Egor Agafonov | 7-6,6-3 |
| ITF M15 Kazan | 2020/03/10 12:45 | Sergei Pogosian v Maxim Ratniuk | 4-6,1-6 |
| ITF M15 Kazan | 2020/01/23 11:35 | Sergei Pogosian v Savriyan Danilov | 2-6,6-4,3-6 |