| UTR Pro Tennis Series Copenhagen | 2021/10/19 11:30 | Henrik Heise Korsgaard v Vilhelm Fridell | 4-6,6-7 |
| UTR Pro Tennis Series Copenhagen | 2021/10/18 11:30 | Nikolaj Katic v Henrik Heise Korsgaard | 1-6,6-3,6-4 |
| ITF M25 Sintra | 2021/09/13 16:30 | Henrik Heise Korsgaard v Jip Van Assendelft | 6-3,4-6,5-10 |
| ITF M25 Sintra | 2021/09/07 10:45 | Alastair Gray v Henrik Heise Korsgaard | 6-1,6-4 |
| ITF M25 Sintra | 2021/09/06 13:30 | Paulo A S Dos Santos v Henrik Heise Korsgaard | 7-5,5-7,6-10 |
| ITF M15 Vejle | 2021/07/29 14:35 | Henrik Heise Korsgaard v Christian Sigsgaard | 7-5,6-2 |
| ITF M15 Vejle | 2021/07/27 17:20 | Leonardo Catani v Henrik Heise Korsgaard | 3-6,3-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/19 08:30 | Dominik Palan v Henrik Heise Korsgaard | 6-7,5-2 |
| UTR Pro Tennis Series Copenhagen | 2021/10/18 07:00 | Yurii Dzhavakian v Felipe Mikkelsen | 6-0,6-1 |
| ITF M15 Doha | 2021/10/11 15:50 | Zura Tkemaladze v Felipe Mikkelsen | 6-1,6-1 |
| ITF M15 Doha Qual | 2021/10/10 13:30 | Tushar Madan v Felipe Mikkelsen | 6-7,3-6 |
| ITF M15 Doha | 2021/10/06 12:30 | Nico Hornitschek v Felipe Mikkelsen | 4-6,6-3,6-2 |
| ITF M15 Doha | 2021/10/04 12:00 | Essa Qabazard v Felipe Mikkelsen | 7-6,6-2 |
| ITF M15 Doha | 2021/10/03 12:00 | Theertha Shashank Macherla v Felipe Mikkelsen | 2-6,7-6,8-10 |
| ITF M25 Falun | 2021/09/26 11:00 | Karl Friberg v Felipe Mikkelsen | 6-1,6-1 |
| ITF M15 Ulcinj | 2021/09/12 08:00 | Felipe Mikkelsen v Leonardo Rossi | 2-6,1-6 |