Stadium: Court 3 Round: 14 Ground: Clay
| 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 |
| Challenger St. Petersburg | 2021/03/01 10:00 | Ivan Nedelko v Zizou Bergs | 2-6,1-6 |
| Challenger St. Petersburg | 2021/02/28 12:15 | Ivan Nedelko v Daniil Golubev | 6-0,6-0 |
| Challenger Nur-Sultan | 2021/02/23 11:45 | Jurij Rodionov v Ivan Nedelko | 6-3,6-3 |
| Challenger Nur-Sultan | 2021/02/22 04:00 | Ivan Nedelko v Ryan Peniston | 3-6,4-6 |
| Challenger Nur-Sultan | 2021/02/21 04:00 | Ivan Nedelko v Danil Ozernoy | 6-4,6-0 |