Stadium: Court 3 Round: 44 Ground: Clay
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Aliaksandr Liaonenka v Simon Habsuda | 6-2,6-0 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Aliaksandr Liaonenka v Egor Matvievici | 6-2,6-3 |
| ITF M15 Novomoskovsk | 2021/05/26 10:05 | Aliaksandr Liaonenka v Carlos Sanchez Jover | 6-4,1-6,5-7 |
| ITF M15 Novomoskovsk | 2021/05/25 06:15 | Bruno P Navarro v Aliaksandr Liaonenka | 6-0,5-7,7-10 |
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Svyatoslav Ilnytskyy v Aliaksandr Liaonenka | 4-6,3-6 |
| ITF M15 Tbilisi | 2021/05/19 07:35 | Aliaksandr Liaonenka v Benjamin Lock | 3-6,3-6 |
| ITF M15 Tbilisi | 2021/05/17 06:00 | Aliaksandr Liaonenka v Emir Sendogan | 6-2,7-5 |
| ITF M15 Tbilisi | 2021/05/17 05:30 | Aliaksandr Liaonenka v Irakli Metreveli | 6-0,6-3 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Olexiy Kolisnyk v Juan Ignacio Alcalde | 6-3,6-4 |
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Olexiy Kolisnyk v Alexander Zgirovsky | 7-6,2-6,8-10 |
| 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 |