Stadium: Court 4 Round: 44 Ground: Clay
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Matteo Arnaldi v Dudun, Igor | 6-4,6-4 |
| ITF M15 Novomoskovsk | 2021/05/23 06:00 | Dudun, Igor v Baklanov, Egor | 7-5,6-4 |
| ITF M15 Novomoskovsk | 2020/08/31 09:00 | Dudun, Igor v Aguilar, Federico Juan | 6-2,6-4 |
| ITF M15 Novomoskovsk | 2020/08/31 09:00 | Uzhylovsky, Vladimir v Dudun, Igor | 6-4,7-6 |
| ITF - M15 Doha | 2019/10/21 11:55 | Dudun, Igor v Alcantara, Francis Casey | 0-6,1-6 |
| ITF Ukraine F2 | 2016/05/15 07:00 | Lebedyn, Alexander v Dudun, Igor | 6-0,6-0 |
| ITF Ukraine F4 Qual | 2015/09/26 07:00 | Dudun, Igor v Lobak, Vladyslav | 0-6,2-6 |
| ITF Egypt F33 | 2015/04/12 09:00 | Lizen, Aswin v Dudun, Igor | 6-2,6-0 |
| ITF M25 Telavi | 2021/07/26 07:30 | Evloev, T. v Bielinskyi, Oleksandr | 2-6,1-6 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Bielinskyi, Oleksandr v Habsuda, Simon | 6-3,3-6,8-10 |
| ITF M15 Novomoskovsk | 2021/05/27 07:15 | Bielinskyi, Oleksandr v Nikita Mashtakov | 6-3,1-6,5-7 |
| ITF M15 Novomoskovsk | 2021/05/26 10:45 | Viacheslav Bielinskyi v Bielinskyi, Oleksandr | 6-7,6-4,0-6 |
| ITF M15 Novomoskovsk | 2021/05/25 11:30 | Cengiz Aksu v Bielinskyi, Oleksandr | 5-7,1-6 |
| ITF M15 Novomoskovsk | 2021/05/25 06:15 | Bielinskyi, Oleksandr v Alcalde, Juan Ignacio | 6-2,6-2 |
| ITF M15 Novomoskovsk | 2021/05/23 10:30 | Parshutin, Denis v Bielinskyi, Oleksandr | 2-6,3-6 |
| ITF M15 Cairo | 2021/04/26 08:00 | Bielinskyi, Oleksandr v Bautista Vilicich | 6-3,2-6,5-10 |