Stadium: Court 9 Round: 44 Ground: Clay
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 08:00 | Adam Bronka v Svyatoslav Ilnytskyy | 5-7,0-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/01 11:30 | Dario Drebenstedt v Svyatoslav Ilnytskyy | 5-7,4-6 |
| ITF M25 Wroclaw | 2021/06/27 09:30 | Edouard Villoslada v Svyatoslav Ilnytskyy | 6-7,6-3,10-6 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Simon A Ivanov v Svyatoslav Ilnytskyy | 6-1,6-3 |
| ITF M15 Novomoskovsk | 2021/05/24 12:00 | Svyatoslav Ilnytskyy v Aliaksandr Liaonenka | 4-6,3-6 |
| ITF M15 Antalya | 2020/12/21 10:50 | Simeon Terziev v Svyatoslav Ilnytskyy | 6-4,6-4 |
| ITF M15 Antalya | 2020/12/15 07:00 | Filip Misolic v Svyatoslav Ilnytskyy | 6-1,6-4 |
| ITF M15 Antalya | 2020/12/06 07:00 | Svyatoslav Ilnytskyy v Taiyo Yamanaka | 3-6,2-6 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 08:00 | Tomas Lanik v Juliusz Bienkiewicz | 4-6,6-1,10-5 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/01 09:35 | Tomas Lanik v Dariusz Kuczynski | 6-2,6-1 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Tomas Lanik v Francisco Vittar | 4-6,2-6 |
| ITF M15 Poprad | 2021/07/05 08:00 | Tomas Lanik v Michal Novansky | 7-6,2-6,5-10 |
| ITF M15 Poprad | 2021/07/04 11:00 | Martin Krumich v Tomas Lanik | 3-6,3-6 |
| ITF M25 Wroclaw | 2021/06/27 11:00 | Tomas Lanik v Olaf Pieczkowski | 2-6,3-6 |
| ITF M15 Antalya | 2021/04/05 07:00 | Niklas Guttau v Tomas Lanik | 6-2,6-2 |
| ITF M15 Antalya | 2021/04/04 06:30 | Tomas Lanik v Noel Larwig | 6-1,6-2 |