Stadium: Court Tsitsipas Round: 62 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2021/11/15 08:00 | Uisung Park v Charles Tzicas | 6-2,6-3 |
| ITF M15 Heraklion | 2021/11/14 09:30 | Uisung Park v Pavlos Tsitsipas | 6-1,6-1 |
| ITF M15 Heraklion | 2021/11/09 08:30 | Matthew Romios v Uisung Park | 6-4,6-1 |
| ITF M15 Monastir | 2021/06/26 08:30 | Uisung Park v Luciano Darderi | 3-6,4-6 |
| ITF M15 Monastir | 2021/06/25 08:30 | Uisung Park v Moez Echargui | 6-4,6-2 |
| ITF M15 Monastir | 2021/06/24 08:30 | Rinky Hijikata v Uisung Park | 6-1,6-7,0-6 |
| ITF M15 Monastir | 2021/06/23 08:30 | Adam El Mihdawy v Uisung Park | 6-4,1-6,2-6 |
| ITF M15 Monastir | 2021/06/21 12:30 | Uisung Park v Shohei Chikami | 6-4,6-3 |
| ITF M15 Heraklion | 2021/11/15 08:00 | Nikolay Nedelchev v Christian Fellin | 6-1,6-0 |
| ITF M15 Torello | 2021/11/02 09:00 | Nikolay Nedelchev v Noah Lopez | 6-1,5-7,6-10 |
| ITF M15 Sozopol | 2021/10/14 18:40 | Nikolay Nedelchev v Hazem Naw | 6-1,1-6,4-10 |
| ITF M15 Sozopol | 2021/10/14 12:30 | Tim Handel v Nikolay Nedelchev | 3-6,6-7 |
| ITF M15 Sozopol | 2021/10/13 09:00 | Yannik Steinegger v Nikolay Nedelchev | 6-4,4-6,5-10 |
| ITF M15 Sozopol | 2021/10/11 10:00 | Nikolay Nedelchev v Michael Gloeckler | 6-0,6-3 |
| ITF M15 Sozopol | 2021/10/06 07:00 | Tim Handel v Nikolay Nedelchev | 6-4,6-4 |
| ITF M15 Sozopol | 2021/10/05 06:30 | Nikolay Nedelchev v Michael Gloeckler | 6-0,6-3 |