Stadium: Court 2 Round: 54 Ground: Hardcourt indoor
| ITF M15 St Petersburg | 2021/04/04 13:20 | Ivan Nedelko v Sergei Pogosian | 6-1,6-1 |
| 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 |
| ITF M15 St Petersburg | 2021/04/04 07:00 | Martin Borisiouk v Matvey Minin | 6-3,6-4 |
| ITF M15 Kazan | 2021/03/08 12:15 | Pavel Verbin v Martin Borisiouk | 6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2020/11/18 12:00 | Martin Borisiouk v Jeffrey Von Der Schulenburg | 6-7,6-4,4-6 |
| ITF M15 Sharm El Sheikh | 2020/11/17 09:50 | Luis Patino v Martin Borisiouk | 4-6,6-3,6-10 |
| ITF M15 Sharm El Sheikh | 2020/11/16 12:00 | Hugo Voljacques v Martin Borisiouk | 6-7,5-7 |
| ITF M25 Aktobe | 2020/02/12 09:35 | Martin Borisiouk v Emiliano Maggioli | 6-4,6-4 |
| ITF M25 Aktobe | 2020/02/11 07:05 | Alexandr Binda v Martin Borisiouk | 6-7,6-7 |
| ITF M25 Aktobe | 2020/02/10 05:00 | Yerassyl Murat v Martin Borisiouk | 4-6,2-6 |