Stadium: Court 12 Round: 26 Ground: Clay
| Challenger Antalya | 2021/12/07 07:30 | Duckhee Lee v Fabian Marozsan | 6-4,6-1 |
| Challenger Antalya | 2021/11/30 10:45 | Duckhee Lee v Eduard Esteve Lobato | 2-6,3-6 |
| ITF M15 Cairo | 2021/11/25 10:20 | Duckhee Lee v Daniil Ostapenkov | 6-4,6-3 |
| ITF M15 Cairo | 2021/11/24 08:00 | Duckhee Lee v Luca Tomasetto | 6-3,5-7,6-4 |
| ITF M15 Sharm El Sheikh | 2021/11/20 08:00 | Peter Fajta v Duckhee Lee | 6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2021/11/19 08:00 | Chien Hsun Lo v Duckhee Lee | 2-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/11/18 09:50 | Neil Oberleitner v Duckhee Lee | 3-6,4-6 |
| ITF M15 Sharm El Sheikh | 2021/11/17 12:50 | Erik Arutiunian v Duckhee Lee | 2-6,0-6 |
| Challenger Antalya | 2021/12/07 07:30 | Oleg Prihodko v Riccardo Bonadio | 7-6,6-4 |
| Challenger Antalya | 2021/12/06 11:30 | Cezar Cretu v Oleg Prihodko | 6-2,6-4 |
| Challenger Antalya Qual | 2021/12/05 11:00 | Oleg Prihodko v Mick Veldheer | 1-6,6-3,6-2 |
| ITF M15 Antalya | 2021/11/24 09:20 | Oleg Prihodko v Lucas Gerch | 1-6,6-4,2-6 |
| ITF M15 Antalya | 2021/11/16 06:25 | Bogdan Ionut Apostol v Oleg Prihodko | 6-4,4-6,7-6 |
| ITF M15 Antalya | 2021/11/11 08:40 | Oleg Prihodko v Bastian Malla | 4-6,1-6 |
| ITF M15 Antalya | 2021/11/03 11:05 | Oleg Prihodko v Marsel Ilhan | 6-3,3-6,3-6 |
| Challenger Sibiu | 2021/09/27 07:00 | Oleg Prihodko v Yan Bondarevskiy | 6-7,4-6 |