Stadion: Court 7 Round: 27 Ground: Clay
| ITF - M15 - Frederiksberg | 2021/08/05 13:00 | Jonathan Mridha v Oscar Moraing | 6-1,6-3 |
| ITF - M15 - Frederiksberg | 2021/08/04 12:05 | Jonathan Mridha v Adrian Oetzbach | 6-2,6-3 |
| ITF - M15 - Vejle | 2021/07/31 11:00 | Jonathan Mridha v August Holmgren | 6-3,3-6,4-6 |
| ITF - M15 - Vejle | 2021/07/30 14:30 | Jonathan Mridha v Guy Den Ouden | 6-3,6-4 |
| ITF - M15 - Vejle | 2021/07/30 11:30 | Jonathan Mridha v Simon Yitbarek | 6-1,6-3 |
| ITF - M15 - Vejle | 2021/07/28 10:10 | Jonathan Mridha v Petro Orlando Fellin | 6-3,0-6,6-4 |
| ITF - M25 - Marburg | 2021/07/09 09:00 | Nick Hardt v Jonathan Mridha | 6-4,7-6 |
| ITF - M25 - Marburg | 2021/07/08 11:25 | Jonathan Mridha v Marvin Netuschil | 6-4,7-6 |
| ITF - M15 - Frederiksberg | 2021/08/05 10:25 | Christian Sigsgaard v Daniel De Jonge | 6-4,7-6 |
| ITF - M15 - Frederiksberg | 2021/08/03 09:45 | Christian Sigsgaard v Giorgio Ricca | 6-3,6-3 |
| ITF - M15 - Vejle | 2021/07/29 14:35 | Henrik Heise Korsgaard v Christian Sigsgaard | 7-5,6-2 |
| ITF - M15 - Vejle | 2021/07/28 12:50 | Christian Sigsgaard v Ryan Nijboer | 6-3,6-2 |
| ITF - M15 - Heraklion | 2021/05/31 06:30 | Christian Sigsgaard v Sean Hodkin | 2-6,7-5,6-10 |
| ITF - M15 - Heraklion | 2021/05/30 09:00 | Matic Dimic v Christian Sigsgaard | 3-6,2-6 |
| ITF - M15 - Tbilisi | 2021/05/22 06:00 | Christian Sigsgaard v Alexander Shevchenko | 6-7,6-7 |
| ITF - M15 - Tbilisi | 2021/05/21 06:00 | Christian Sigsgaard v Benjamin Lock | 7-5,6-1 |