Stadium: Court 22 Round: 25 Ground: Clay
| Challenger St. Petersburg | 2021/03/08 13:05 | Duckhee Lee v Alexey Vatutin | 6-0,1-6,1-6 |
| Challenger St. Petersburg | 2021/03/02 08:55 | Roberto Quiroz v Duckhee Lee | 6-2,6-2 |
| Davis Cup | 2020/03/06 11:00 | Fabio Fognini v Duckhee Lee | 6-0,6-3 |
| Challenger Launceston | 2020/02/05 23:00 | Borna Gojo v Duckhee Lee | 6-7,6-2,7-5 |
| Challenger Launceston | 2020/02/04 23:00 | Calum Puttergill v Duckhee Lee | 4-6,1-6 |
| Challenger Burnie | 2020/01/30 08:00 | Alex Bolt v Duckhee Lee | 6-3,6-2 |
| Challenger Burnie | 2020/01/29 03:15 | Evan King v Duckhee Lee | 4-6,3-6 |
| Challenger Bangkok 2 | 2020/01/20 04:35 | Duckhee Lee v Mukund Sasikumar | 1-6,3-6 |
| ITF M15 Antalya | 2021/03/16 07:00 | Calin Manda v Nicolas Parizzia | 6-3,6-2 |
| ITF M15 Antalya | 2021/03/15 08:00 | Calin Manda v Bautista Vilicich | 7-5,6-2 |
| ITF M15 Antalya | 2021/03/14 07:00 | Calin Manda v Mathys Erhard | 6-4,6-4 |
| ITF M15 Antalya | 2021/02/22 07:00 | Benedikt Henning v Calin Manda | 6-2,6-1 |
| ITF M15 Antalya | 2021/02/21 13:00 | Josip Krstanovic v Calin Manda | 2-6,3-6 |
| ITF M15 Antalya | 2021/02/14 12:00 | Calin Manda v Sandro Kopp | 5-7,5-7 |
| ITF M15 Antalya | 2021/01/18 09:00 | S Mert Ozdemir v Calin Manda | 1-6,2-6 |
| ITF M15 Antalya | 2021/01/17 09:00 | Thiago Cigarran v Calin Manda | 1-6,1-6 |