Stadium: Court 4 Round: 44 Ground: Clay
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Olexiy Kolisnyk v Roman Boychuk | 6-4,2-6,10-8 |
| ITF M15 Cairo | 2021/05/05 11:00 | Jose Pereira v Olexiy Kolisnyk | 7-5,6-0 |
| ITF M15 Cairo | 2021/05/04 08:00 | Felix Gill v Olexiy Kolisnyk | 1-6,3-6 |
| ITF M15 Cairo | 2021/05/03 09:00 | Syed Mohd Agil Syed Naguib v Olexiy Kolisnyk | 1-6,1-6 |
| ITF M15 Cairo | 2021/05/02 10:00 | Olexiy Kolisnyk v Yuichiro Inui | 6-4,6-3 |
| ITF M15 Cairo | 2021/04/26 08:00 | Olexiy Kolisnyk v Gian Marco Ortenzi | 4-6,4-6 |
| ITF M15 Cairo | 2021/04/25 12:30 | Leonardo Rossi v Olexiy Kolisnyk | 5-7,6-1,2-10 |
| ITF M15 Cairo | 2021/04/21 11:25 | Edoardo Lavagno v Olexiy Kolisnyk | 6-0,6-1 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Egor Matvievici v Alexander Zgirovsky | 1-6,3-6 |
| ITF M15 St Petersburg | 2021/04/12 08:30 | Daniil Glinka v Alexander Zgirovsky | 7-6,7-6 |
| ITF M15 St Petersburg Qual | 2021/04/11 11:00 | Leonid Sheyngezikht v Alexander Zgirovsky | 6-4,4-6,4-10 |
| ITF M15 St Petersburg | 2021/04/04 13:40 | Igor Trunov v Alexander Zgirovsky | 1-6,6-3,10-7 |
| ITF M15 Kazan | 2021/03/09 06:55 | Alexander Zgirovsky v Pavel Verbin | 6-4,6-7,6-10 |
| ITF M15 Kazan | 2021/03/08 11:15 | Alexander Zgirovsky v Dmitry Dolzhenkov | 7-6,6-3 |
| ITF M15 Monastir | 2021/01/10 12:30 | Paras Dahiya v Alexander Zgirovsky | 6-4,6-0 |
| ITF M15 Monastir | 2021/01/05 09:45 | Wojciech Marek v Alexander Zgirovsky | 6-1,5-7,7-6 |