Stadium: Central Court Round: 25 Ground: Clay
| ITF M15 Antalya | 2021/03/26 07:00 | Duckhee Lee v Dragos Nicolae Madaras | 5-7,3-6 |
| ITF M15 Antalya | 2021/03/24 08:00 | Duckhee Lee v Vladislav Sveridenko | 6-3,6-0 |
| ITF M15 Antalya | 2021/03/18 06:55 | Duckhee Lee v Mate Valkusz | 1-6,1-6 |
| 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 |
| ITF M25 Vale Do Lobo | 2021/03/10 11:25 | Tiago Cacao v Christopher Heyman | 3-6,2-6 |
| ITF M25 Faro | 2021/03/03 13:40 | Kuzey Cekirge v Tiago Cacao | 6-4,5-7,6-2 |
| ITF M25 Vale Do Lobo | 2021/02/24 12:00 | Lucas Poullain v Tiago Cacao | 6-2,6-2 |
| Challenger Maia | 2020/11/28 14:30 | Tiago Cacao v Altug Celikbilek | 4-6,3-6 |
| ITF M15 Benicarlo | 2020/11/26 14:40 | Tiago Cacao v Kenny de Schepper | 1-6,3-6 |
| ITF M15 Benicarlo | 2020/11/25 08:55 | Tiago Cacao v Mathys Erhard | 6-7,6-3,6-4 |
| ITF M15 Villena | 2020/11/18 10:05 | Tiago Cacao v Diego A B Sanchez | 4-6,2-6 |
| ITF M15 Quinta Do Lago | 2020/11/04 11:35 | Sebastian Fanselow v Tiago Cacao | 6-3,6-1 |